Out now!

Bruno Mars is back with the second single from his album Doo-wops & Hooligans, and it's a heart-breaking R'n'B ballad.

It's pretty different from his last hit, Just The Way You Are, a song so schmoozy it left us feeling… well, a little bit sick.

On Grenade, a lovesick Bruno is still crooning, but his love no longer feels the same. Poor Bruno. The song has more punch than Just The Way You Are and background beats keep the pace up, building up to an epic chorus.

Yes, especially if you're a bit of a romantic.

Yes! It's gone straight to the top!

"It's OK as a song I suppose. I don't like the fact it's about love - but the tune's alright."

Chiara, 11, Scotland

"I love this song! It's amazing!"

Anisah, 14, Leeds, England

"Grenade is a great song and is my favourite! I listen to it all the time!"

Jessica, 12, County Durham, England

"The BEST song EVER! I've never heard anything like it! He's so cool!"

Jessica, 10, Devon, England

"I didn't really enjoy this song at all because of the lyrics, although I like the actual tune to the song!"

Amie, 12, Wales

"It's cool and the best one he's done so far!"

Callum, 12, Nottingham, England

"I really don't like this song and if you listen to the lyrics can you see how stupid they are! It's one of the worst songs I've ever heard!"

Anasthasia, 13, Gloucestershire, England

"I have it on my iPod and the video is AMAZING! I really like this song and I like the music video! It's just awesome. I listen to it all the time. I'm lost for words, it's that good! This is the best song he's ever done!"

Zeena, 11, Birmingham, England

"It's a really good song, but if you listen to it too much it gets a bit boring!"

Ceri, 10, Scotland

"This song is AMAZING! I was singing it all the way through school and my friends got really annoyed with me!"

Hetty, 12, Reading, England

"I really love this song! All his songs are great, but Grenade is definitely his best."

Niamh, 9, Gloucester, England

"It's so sad! I hope no one ever sings it to me!"

Hannah, 11, Bristol, England

"Bruno Mars is a very talented singer. His song genre is pop and soul. When I listen to this song it makes me want to cry because it's so good!"

Jena, 10, London, England

"Grenade is a good song!"

Maritsa, 10, London, England

"Wow! This song is very heart felt and amazing!"

Olivia, 10, Newcastle, England

"It's alright. I only like the first part of the chorus and then his voice starts to irritate me. It's better than his first single, but I'm not a Bruno Mars fan."

Sophia, 14, Scotland

"I think that Grenade is an awesome song! I have it stuck in my brain now because it's so cool. If you haven't heard it, it really is worth listening to!"

Nikoline, 10, Switzerland, England

"It's totally amazing! It's a must have for any teenager as it's really emotional!"

Alex, 13, Wales

"I love this song so much! It's my favourite song! Awesome! I would rate it 5 stars out of 5, because I think it is one of Bruno Mars's best songs so far!"

Megan, 10, Scotland

"This song is amazing! I play it all the time and I know all the words."

Dan, 9, Wales

"I really do love the song Grenade by Bruno Mars, however, throughout the whole song it seems like he's crying about how he'd do anything for his girl. In the end, it gets kind of boring! Not really the song for me!"

Wahida, 12, London, England

"I love this song now, but when I first heard it I didn't! I suppose it just grew on me!"

Niamh, 11, Hyde, London

"This song is an awesome tune - I love it! The only thing I don't like about it, which spoils the song for me, is the words. They are so clingy. But it's still a good song!"

Laura, 11, Surrey, England

"It's a great song and I would recommend it to everybody!"

Nicole, 9, Essex, England

"Amazing! I can't get it out of my head!"

Lowri, 10, Wales

"This song is always stuck in my head! Amazing song!"

Rosie, 12, London, England

"Amazing! This song grew on me and it's so good. Can't wait for next single!"

Georgia, 12, Scotland

"Love the song! It's AMAZING and I mean AMAZING!"

Samantha, 14, London, England

"If I keep playing this song over and over again, I think I'm going to break the computer. Love it!"

Beth, 13, Stoke, England

"I think it's a romantic song, which I normally don't like as they are really slow. But this one changed my mind. His song is sort of upbeat and has the RnB mix inside it. It's also got good lyrics and the style of this song definitely suits him."

Gabby, 13, England

"Wow! This song is amazing! My favourite song! I recently watched the music video and it's so sad!"

Mishy, 12, California, USA

"I LOVE IT SO MUCH!"

Anya, 11, Northampton, England

"I think this song is great and so is Bruno Mars!"

Natasha, 10, Belfast, N. Ireland

"It's rubbish!"

Nicole, 10, Scotland

"I love this song."

Joseph, 11, Brighton, England

"The best song ever!"

Ethan, 10, Wales

"I love this song and listen to it 24 / 7! My mum gets angry because I'm always singing it!"

Kelsey, 10, Southampton, England

"I really like Grenade - especially the accompaniment. It is a great song!"

Isla, 10, Midlands

"It's a very meaningful song! It contrasts so much with his previous songs because it's a completely different theme!"

Nivetha, 13, London, England

"I love Bruno Mars' new song Grenade! It's my favourite song in the world at the moment!"

Rose, 12, London, England

"This is my favourite song!"

Rebecca, 11, England

"It's brill! I can't get it out of my head!"

Zofia, 9, Brighton, England

"It's awesome!"

Hannah, 8, Essex, England

"This song is the best! I love it so much! It's the best song by him so far!"

Claire, 8, London, England

"I've just started in Year 7 and the girls in my class think the song is depressing!"

Lolly, 12, England

"I love Grenade by Bruno Mars. You always want to sing along to it when it's playing! I have it on my iPod and the video is AMAZING!"

Emma, 11, England

"The best song I think I'll hear all year!"

Maisie, 12, Scotland

"Grenade is my favourite song in the whole world! The lyrics are very catchy and they always manage to get stuck in my head! I Love Grenade soooo much!!"

Prerna, 11, Hong Kong, China

"I think it's brilliant!"

Ran, 11, Stevenage, England

"I really love this song. I also really love Bruno Mars and his new album!"

Flossie, 10, Suffolk, England

"This is the best song he's ever done! I LOVE IT! It's my fave song this year!"

Megan, 11, Derby, England

"It's cool!"

Alicia, 10, England

"I think it's quite good!"

Josh, 12, Nottingham, England

"Bruno's song Grenade is ace! Bruno is so cute and his voice and song choice are amazing!"

Jessie, 11, Stockport, England

"I love this song and it's very meaningful! The video makes me want to run up and hug him!"

Emily, 11, Yorkshire, England

"This song is so much better than the bit he sings when he features in Billionaire. And it's really catchy!"

Susie, 12, Stockport, England

"This song is AMAZING!"

Olivia, 11, Carlisle, England

"I love this song - it is one of my faves!"

Chanelle, 14, Canada

"My classmates and I LOVE this song, we are always singing it!"

Imaan, 10, London, England

"Love this song! It's so catchy!"

Lucia, 12, Kent, England

"I like it!"

Anna, 11, London, England

"I LOVE, LOVE, LOVE this song, best one by him. I've already got the album, and it's my fave song at the minute!"

Beth, 8, Colchester, England

"I've heard it on the radio and I must admit, it isn't bad. It's SO catchy!"

Kate, 11, Galway, Ireland

"I think his voice is amazing and catchy, especially in Grenade!!"

Emma, 11, Glasgow, Scotland

"We love Bruno Mars!"

Miriam and Nazyar, 12, London, England

"I love Bruno Mars' new song!!"

Kayla, 11, Manchester, England

"I love this song! It's been stuck in my head for the past seven weeks! I know all the lyrics."

Aneesah, 11, London, England

"I think this song is awesome! I like the lyrics!"

Paul, 13, Warwickshire, England

"This song is great! It's one of his best songs!"

Izzy, 10, London, England

"I love this single! It's so cool!"

Lauren, 12, Sussex, England

"I love this song and I'm also singing Grenade for my talent show! I hope I do it as good as he does!"

Janvi, 11, London, England

"I think the song is good, but after I've listened to it, it just puts me in a sad, uneasy mood because of all the emotions in the song!"

Gabrielle, 10, London, England

"I loved it, but I was disappointed because it's not as good as his previous single!"

Emma, 9, Liverpool, England

"What stupid lyrics! Would you catch a grenade for a girl? I definitely wouldn't!"

Aidan, 11, Coventry, England

"I love Grenade! I know all of the words!"

Craig, 9, Dunfermline, Scotland

"The tune was dull and I got bored! I wouldn't recommend it!"

Danni, 13, Manchester, England

"I think this is really awesome!"

Henna, 10, London, England

"Wow! It's the BEST song ever!"

Willow, 10, Oxford, England

"This song is quality!"

Cameron, 13, Hampshire, England

"I love this song!"

Talia, 10, Cornwall, England

"Best song ever!"

Alex, 10, Cornwall, England

"I love Bruno's new song Grenade!"

Emily, 12, Sussex, England

"This song is absolutely amazing! In fact, all the songs by Bruno Mars are fantastic. I would rate it 10/10!"

Lucy, 13, London, England

"I don't really like it."

Bethany, 11, England

"This hit is so good!"

Katie, 11, London, England

"Out of all of Bruno Mars's songs - this is definitely the best!"

Becky, 12, Burnley, England

"I absolutely love this song, but he has got a weird old hairstyle!"

Anjum, 10, London, England

"It's great! I love it! I could listen to it all day!"

Leah, 10, Worchester, England

"This song is amazing!"

Hannah, 10, Wales

"I first found the song a little repetitive and now I hate it. Grenade is good but it's all they play on the radio, so I'm getting a little tired of it now!"

Alice, 11, Surrey, England

"Wow! I just love Bruno Mars! He's such a character and Grenade is a smash hit! My friends and I love it!"

Sophie, 10, Dorset, England

"I love this song! I think he's amazing!"

Millie, 13, England

"I love Grenade and Bruno Mars is amazing! He's destined to be a HUGE star!"

Amy, 12, Belfast, N. Ireland

"This song is totally awesome! I play it over and over and I never get sick and tired of it!"

Khalid, 12, Sheffield, England

"The song's a bit depressing!"

Terrie, 8, Madrid, Spain

"This song is so good! To be honest, all his songs are amazing!"

Nura, 10, London, England

"I love Bruno Mars and this song! He's AMAZING, just the way he is!"

Nicole, 11, Edinburgh, Scotland

"Absolutely amazing song! And Bruno, I would catch a grenade for you any day!"

Cakes, 11, Manchester, England

"I love Grenade! I know all the words and I love Bruno Mars!"

Megan , 10, Norfolk, England

"It's SO COOL! Plus it's catchy!"

Martina, 10, Glasgow, Scotland

"So cool!"

Laura, 10, London, England

"It's AMAZING! He's one of the few singers who can sing without auto-tune!"

Lola, 12, London, England

"I love Bruno Mars, he's so great! The song made me feel emotional."

Ruth, 12, Surrey, England

"I like the song!"

Ellie, 8, Aberdeenshire, Scotland

"It's alright and I don't mind listening to it, but it is in danger of being overplayed like so many other songs."

Beth, 11, London, England

"It is a good song but after listening to it for a while I got kinda sick of it."

Alice, 11, Oxfordshire, England

"I love his songs!"

Levontai, 11, Surrey, England

"I think his new song is amazing! I had to sing it in a singing competition and I came second! Go Bruno Mars!"

Jenna, 14, Essex, England

"I'm not amazed by this song but it's better than Just The Way You Are!"

Olivia, 11, Manchester, England

"I love this song."

Thomas, 13, Lincolnshire, England

"I love it!"

Najeem, 11, Leicestershire, England

"I don't really like this song that much but my sis can't get enough of it!"

Caitlin, 10, Glasgow, Scotland

"Great tune! I'm always singing along when it's on the radio!"

Jazmin, 10, Berkshire, England

"Amazing! Come on Bruno Mars!"

Cara, 10, Scotland

"It is awesome!"

Alisha, 11, Berkshire, England

"It is brilliant!"

Priya, 13, Birmingham, England

"OK song, but some of the others on the album are a lot better."

Patrick, 11, N. Ireland

"Brill, awesome and fantastic!"

Yasmin, 7, Worcestershire, England

"Oh my gosh!! This is my favourite song at the moment! Bruno Mars is a brilliant singer, I think he's awesome! Five stars from me!"

Hannah, 12, Worcestershire, England

"This is an amazing song by Bruno, by far the best, and the video is just beautiful. The story-line is so tragic it makes you want to cry, and for me it defo wins the Best Music Video, putting Katy Perry's Firework into 2nd place. Go Bruno!

Ally, 10, Cardiff, Wales

"I really like this song and I like the music video! It's just awesome!"

Aiden, 10, Dorchester, England

"I love this song and I listen to it every day."

Sarah, 13, England

"This song is so good! It's my mobile phone ring tone at the moment!"

Danielle, 10, Blackpool, England

"I love this song! I could listen to it day and night and it suits my life perfect right about now!"

Ella, 10, Colchester, England

"Grenade is such a moving song! It tells the tale of a guy who would do anything for a girl that doesn't love him back. It's way better than anyone else in the charts!"

Robbie, 10, Edinburgh, Scotland

"I love it! It's AMAZING! I love his voice!"

Hiab, 11, London, England

"I like this song and so does my brother!"

Cerys, 10, Sussex, England

"I think it's AMAZING!"

Ben, 11, Scotland

"I absolutely love Grenade! I sing it ALL the time! It's my favourite song!"

Lia, 11, Wales

"I don't particularly like this song. I think it is very poor and it is not my style."

Quinn, 11, Manchester, England

"It's great! Really good!"

Tilly, 8, Ireland

"Love it! Awesome!"

Joe, 10, Yorkshire, England

"This is another great song by Bruno Mars. It's so beautiful and the video is amazing too!"

Ella, 14, Exeter, England

"It's quite a good pop song, but it's not really the kind of music I like."

India, 10, Essex, England

"This song is so amazing!"

Sureya, 10, Cardiff, Wales

"It's 'most played' on my iPod!"

Adele, 11, County Antrim, N. Ireland

"I'm in love with this song! It gets stuck in my head all day!"

Amy, 14, Bournemouth, England

"The song is amazing!"

Lena, 12, France

"It's fab!"

Grace, 8, England

"I love it!"

Nicole, 12, Merseyside, England

"Bruno Mars is a very interesting artist. He's very talented and ticks all the boxes for a superstar. Just when we started to miss him, he comes back to smash the charts with a new and memorable song! Brilliant!"

Beth, 12, Warwickshire, England

"I LOVE this song. It's amazing! I can't stop singing it and I'm always watching the music video!"

Daisy, 11, London, England

"This song is well good and is my favourite song. It's also my mum's favourite song!"

Charlie, 10, Hampshire, England

"It's such a beautiful song and always brings a tear to my eye when I hear it!"

Suzanna, 14, London, England

"Amazing! It's an awesome song. I love it. Chart topper for sure. One of the best songs ever!"

Zeena, 11, Birmingham, England

"I absolutely love this new song! Amazing!"

Sally, 11, Leicestershire, England

"It's an amazing song. When I heard it, it blew my socks OFF! He's amazingly cool!"

Nicole, 9, Carlisle, England

"I love Bruno Mars and his new song Grenade. It's not only a song, but a story reaching out to you, about a boy who loves a girl and is trying to tell her that he would do anything for her. The sad part though is the struggle and pain the boy goes through and the girl doesn't even love him. FAB song!"

Ash, 13, Cambridgeshire, England

"I LOVE Grenade! It's my favourite song!"

Hannah, 11, Wales

"I like this song and I'm so excited to get it on my mobile! It's one of my favourite songs!"

Chloe, 10, London, England

"I'm doing this song for my school talent show. I love it and I can't stop singing it!"

Katy, 10, Grimsby, England

"I love this song - it's the best! 5 stars!"

Carri, 9, Edinburgh, Scotland

"This song is so incredible! I love it and can't stop singing it! Grenade and Just The Way You Are are so awesome!

Megan, 11, Wigan, England

"Love it, love it, LOVE IT!"

Hope, 10, Hampshire, England

"It's cool!"

Georgia, 11, London, England

"Love it!"

Mya, 9, Cardiff, Wales

"I love it! Me and my friends are always listening to it at youth club."

Bethany, 11, York, England

"This is such an awesome song!"

Sadia, 12, Coventry, England

"It is awesome!"

Lauren, 11, West Lothian, Scotland

"I love this song, it is brilliant! Only problem is, I can't get it out of my head!"

Aisling, 9, London, England

"I love it! Can't stop listening to it. It's the bomb!"

Amy, 13, Birmingham, England

"I love it! It is so good to sing to!"

Malene, 12, Norway

"I love this song, it's better then Just The Way You Are. Bruno Mars is a legend! This song has so much meaning!"

Poppy, 12, Somerset, England

"Wow, you'd have to be a pretty good athlete to catch a grenade! Epic song!"

Charlie, 11, Bolton, England

"I love this song so much, but the video is really sad!"

Aiyma, 11, London, England

"All I can say is A-M-A-Z-I-N-G!!"

Alice, 12, Perthshire, Scotland

"It's great, I love it. Can't stop singing it!"

Sam, 11, London, England

"This is pure tuuuuuune! How can you not love it?!"

Patsy, 10, Buckinghamshire, England

"I think it's a really good song!"

Morgan, 11, Belfast, N. Ireland

"It's amazing! I love it!"

Megan, 12, Yorkshire, England

"I love the song Grenade- it's really nice and I would give it 100/100!"

Naima, 10, London, England

"I love Grenade- it's such a good song!"

Sauatu, 10, London, England

"Really really cool! It is 300 times better than his other single!"

Lauren, 13, Somerset, England

"I love this song!! I think the lyrics are really good."

Vinny, 12, Somerset, England

"Grenade the best song ever! The video is sooo sad though!"

Beatrice, 13, London, England

"I love this track! It is sooo amazing! I just love Bruno Mars and my all time fave is Just The Way You Are! Then Grenade came out and I was like YEESSS!!! A NEW BRUNO MARS SONG!!"

Emma, 11, Edinburgh, Scotland

"I love it to pieces!"

Katelyn, 11, York, England

"I think Bruno Mars is utterly AMAZING! He is such a good singer!"

Emma, 11, Edinburgh, Scotland

"I love the song, it is so cool!"

Charlotte, 10, West Midlands, England

"I love the new single!"

Safiay, 9, London, England

"It is really nice but why jump in front of a train when you would die?!"

Imogen, 11, London, England

"Legendary! Love the melody and lyrics. It's brilliant!"

Ben, 10, Wiltshire, England

"I hate it. I thought it was ok but now it is on ALL the time so I can't stand it. The trouble is, it's sooo catchy!"

Sofia, 12, London, England

"I love this song, it is so catchy!"

Emily, 8, London, England

"This song is great, he sings it so passionately!"

Selma, 13, London, England

"AMAZING! That's all I've got to say!"

Ashleigh, 9, Lincolnshire, England

"I LOVE IT! I listen to it every day!"

Megan, 9, Nottingham, England

"AWESOME!"

Sammi, 13, Dorset, England

"I love this song, it's so touching!"

Lathaanghi, 11, London, England

"Once again he has made another smash hit. Legendary song, keep going Bruno, you rule!"

Alex, 13, Marlborough, New Zealand

"Love this song!"

Beatrice, 13, London, England

"I love this song because it just shows what true love is, and that's what boys need to know in this day and age!"

Robyn, 12, Newcastle, England

"Bruno Mars is a great singer. Grenade is my favourite song of 2011!"

Louis, 8, Manchester, England

"Bruno Mars rocks! I love all his songs but the one I like the best is Grenade!"

Molly, 12, London, England

"Wow it's soooo good, I listen to it every day! It should be the national anthem!"

Hannah, 12, Preston, England

"No words can describe this song! IT ROCKS!"

Bhavna, 12, London, England

"Great song but the lyrics are 'I'd jump in front of a train for you', and after railway safety today at school I would never, ever do that for anyone in the whole entire galaxy!!! The song is super sweet, but he's a bit stupid to do all that for for someone, sheesh! You might think that I don't like this song but I do, loads!"

Holly, 10, Manchester, England

"Best song ever!"

Callum, 10, Cornwall, England

"Grenade is a very good song!"

Sanja, 14, Novi Sad, Serbia

"I love this song it is so amazing! I listen to it all the time, it's my favourite song ever!!"

Jodie, 11, Pembrokeshire, England

"It is a good song!"

Ely, 14, Utah, USA

"Well I think the song is good because it brings out my own feelings!"

Vikkie, 13, England

"This song is sooo amazing!"

Leigh, 11, Newcastle, England

"Simply *AMAZING*! I can't get it out of my head! The video is so heart touching as are the lyrics. Brilliant job Bruno Mars! 11/10!"

Nafisa, 12, Manchester, England

"I completely hate this song!"

Tony, 10, London, England

"I think that Bruno Mars is a great singer and always has good songs. Grenade is probably the best!"

Tarran, 11, Walsall, England

"I love it but it's not as good as Just The Way You Are."

Lola, 12, Scotland

"It is top notch!"

Izzy, 10, London, England

"It's brilliant!"

Megan, 8, Hampshire, England

"I love this song! Well done to Bruno for getting two number 1s!"

Jack, 14, Plymouth, England

"I think it's a great song. You don't have to be a big Bruno Mars fan to like this. Even the boys in my class sing it!"

Elisa, 12, Somerset, England

"We think the song is very bad, and we do not like Bruno Mars, he's a pest! We did like Just The Way You Are, it was a good song. NOT GRENADE though, it's rubbish!"

Ella and Dan, 14, New York, USA

"It's a great song and the video really touched me!"

Nivetha, 13, London, England

"I think that Bruno Mars has an amazing voice on Grenade!"

Georgina, 9, Milton Keynes, England

"It's terrible!! Bruno Mars can sing, but I think he sings the wrong things for his voice."

Selina, 11, Buckinghamshire, England

"I like this song but he has such a loud voice I turned it down!"

Maya, 2, Surrey, England

"I think Grenade is one of the best songs Bruno Mars has ever done!"

Daisy, 8, Lincolnshire, England

"Cool!"

Hannah, 7, St Helens, England

"This song is amazing! If you haven't heard it before then you should because it is smashing!"

Megan, 11, England

"I love Bruno Mars, and this is my favourite song by him so far! But I do love 'Just The Way You Are' too. Bruno has an amazing voice!"

Kelly, 12, Ireland

"I don't like Bruno Mars but the song Grenade is awesome!"

Kira, 10, Nottingham, England

"I like it very much, but not as much as Just The Way You Are."

Amelia, 10, Oxford, England

"I'd catch a grenade for you... it is such a sweet song!"

Kitty, 11, Bournemouth, England

"I love Grenade and I hope Bruno stays at number one!"

Rebecca, 12, Kent, England

"I love this song! It's quite slow but still catchy. 3,000,000 times better than Bieber!"

Ish, 11, Hertfordshire, England

"His new single is so cool!"

Catriona, 10, Stockport, England

"This song is plain awesome!"

Anna, 8, Belfast, N. Ireland

"I absolutely LOVE Bruno Mars he is the best singer EVER!! His album Doo Wops and Hooligans is the best album in the world! This is my second favourite song on the album as I think Just the Way You Are was possibly the best song ever written!!"

Eve, 12, Cheshire, England

"Bruno Mars is awesome!! I love his single Grenade!"

Charis, 11, Walsall, England

"I think Grenade is the greatest song ever!! You have to buy it!"

Jasmine, 11, Toulouse, France

"I heard this tune on Bruno's website and I fell in love with it! He is my fave singer at the moment, more people should listen to his music!"

Roberta, 11, Edinburgh, Scotland

"I love Grenade! I listen to it all the time!"

Hannah, 11, Pembrokeshire, Wales

"Grenade is absolutely amazing! I love this song and would rate it 10/10!"

Lucy, 13, London, England

"Amazing! Bruno Mars is one of the best!"

Mike, 11, London, England

"Bruno's best song yet!"

Rianka, 12, Buckinghamshire, England

"Everyone in my house likes the song and I want the album! Grenade is the biggest song on it!!!"

Tamani, 10, London, England

"Amazing song, I'm listening to it now!"

Tasmin, 11, Cardiff, Wales

"Bruno Mars' new song is awesome, I love it!"

Mary, 13, London, England

"I think it is Bruno Mars' best song yet!"

Hannah, 11, Glasgow, Scotland

"This song is amazing! I love it!"

Chloe, 13, Bridgend, Wales

"I love this song, it's brill! Every time I hear it on the radio I sing along!"

Gursimran, 8, Essex, England

"I am totally obsessed with this song, it is BRILL!"

Liz, 11, Southport, England

"It is a really good song!"

Rachel, 12, Lanarkshire, Scotland

"It is really good!"

Cara, 11, Scotland

"I love it!"

Jess, 12, Peterborough, England

"It's ok. I think he has done better songs though."

Katie, 9, Co. Londonderry, N. Ireland

"Really good! I can't stop humming the tune!"

Charlene, 11, London, England

"A very good song with a catchy tune but the video is random!"

Gabriel, 10, Stockport, England

"This song is amazing! It's so upbeat and romantic without being too slushy! Go Bruno Mars!"

Lola, 13, Somerset, England

"This song is awesome! It has a great tune, amazing lyrics and is really catchy. Love it!"

Zara, 13, London, England

"This song is brilliant, really easy to remember the words."

Zelda, 10, England

"I love Grenade, it's amazing! No wonder he has got to number 1!"

Alice, 11, Perth and Kinross, Scotland

"Amazing! That's all I can say, I am lost for words, it's that good!"

Emma, 11, South Yorkshire, England

"I love this song, it's different from the sort of music you hear these days like Rihanna and stuff. Well done Bruno!!"

Sophie, 12, UK

"I love this song, it is so good! Bruno Mars is great!!"

Amy, 11, Manchester, England

"I think the new hit from Bruno Mars is absolutely brill!"

Lauren, 11, Birmingham, England

"Loving the song! Have to listen to it ten times a day!"

Lilly, 12, London, England

"I love it! I love it so much that I was humming the tune in numeracy, literacy and P.E. I hope Bruno makes more EPIC songs like this. My rating... 10/10!"

Fatou, 10, Buckinghamshire, England

"I love it!"

Faduma, 12, London, England

"Bruno Mars gets better with every song! Definitely loving Grenade!"

Amber, 11, Somerset, England

"I love this song!! I am totally buying his album!"

Anna, 10, Peterborough, England

"I love this song! I know nearly all the words to it now and I could listen to it 24/7!"

Meg, 10, Glasgow, Scotland

"I love this song! When I first heard it I wasn't too keen but now I can't stop listening to it!"

Amal, 12, Wokingham, England

"I think this is a really good song! I love Bruno Mars, and this song is just as good as all of his others. Am not disappointed."

Alex, 12, Manchester, England

"I think it's a good song and I like his hat in the video. I would like to hear more songs from him."

Naomi, 10, London, England

"Grenade is wonderful!"

Natalie, 11, Wakefield, England

"Loving this song! It's amazing, he is such a good artist! Can't wait to hear what he brings out next!"

Molly, 11, Devon, England

"I love Grenade, it is such a good song, especially the chorus. The lyrics are amazing."

Anjali, 11, Leicester, England

"I love this song, it's sooo catchy. It's Bruno Mars' best song."

Leena, 11, Buckinghamshire, England

"I love this song! It is amazing because it's got a great beat, but it's still a slow, emotional song!"

Nikki, 12, Birmingham, England

"I hate this song. One to miss."

Simran, 11, UK

"I LOVE this song, but it is a bit over-the-top!"

Florence, 12, Somerset, England

"I think this song is awful! His voice is really annoying and it is a silly subject matter. A bad song - don't waste money on it!"

Lucienne, 13, Oxford, England

"I love this song, especially as it's by Bruno Mars!!"

Chantal, 12, Essex, England

"Bruno is my favourite pop star!"

Ethan, 8, Norwich, England

"Bruno Mars is great at singing! His whole album is excellent but my favourite song is Grenade!"

Emily, 11, Kent, England

"Great voice and a really good song!"

Adrian, 11, Midlands, England

"Good song!"

Luke, 9, Cornwall, England

"It's good!!"

Troy, 10, Cornwall, England