It's out now
Beyonce is BACK with a pumped-up party anthem all about girl power.
It's a new sound from Beyonce, featuring a feisty chorus of "Who run the world? Girls!", set to a carnival marching beat.
It is the first single from her new album and it was produced by British DJ Switch (aka Dave Taylor) who has also made beats for M.I.A. and Christina Aguilera.
Will you still be humming it next week?
If you're a girl, yes, if you're a boy, er perhaps not.
Will it make the charts?
Yes! This marks the start of B's big comeback.
"I think this single is great because it shows how girls have power."
Sumaiyah, 13, London, England
"I think her dancing in the video is fabulous especially the shoulder movement at the beginning."
Andrea, 12, Middlesex, England
"I think it's good, but she could have done better - it's not that catchy."
Francesca, 10, London, England
"My friends and I sing this song and we enjoy it!"
Re, 11, London, England
Bethany, 7, Birmingham, England
"They have shown it on Friday Download and I think it is brilliant!"
Anna, 11, Derbyshire, England
"I love this song. I sang it for my school talent show and won 2nd prize for it! I love this song because it's got a really good beat!"
Katie, 12, Manchester, England
"I love her song it's fantastic!"
Precious, 8, Lewisham, England
"This is my favourite ever song!"
Emma, 10, Sheffield, England
"Her song is very good!"
Renae, 9, Sheffield, England
"I love this song it is amazing, one of the best songs she has ever written! Go Beyonce!!!"
Danielle, 12, Brighton, England
"I think that Beyonce could have done better."
Rubie-Mai, 12, Bradford, England
"I love her new song, it's lush!"
Rosa, 11, Newport, Wales
"I think she is a talented singer!"
Kian, 10, Sheffield, England
"She is the best singer in the world!"
Natasha, 9, Sheffield, England
"I really don't like this song as she just says the same thing over and over again. It does nothing for Beyonce at all, I have to say this is the worst song she has ever published."
Fallon, 12, Liverpool, England
"I love Beyonce, she is brilliant! I hope I can be like her when I'm older, she's wonderful!"
Ellie, 11, Essex, England
"It's a good song but it can get quite annoying after a while!!"
Mireya, 13, England
"I love Run the World!"
"Kat, 10, Manchester, England
"One word: RUBBISH!"
Martha, 10, Stockport, England
"This song is sexist but the tune is amazing."
Brandon, 14, Stockton on Tees, England
"It is a good song!"
Rebecca, 12, UK
"It's her best song since Telephone with Lady Gaga, which was excellent."
Arianit, 11, Rotherham, England
"I think it's OK. I like the beat, but the words get a bit dodgy. It wouldn't be suitable for children 11 and under."
Mari-Anne, 14, Oxford, England
"It is really great, girls rule!"
Naomie, 14, Berkshire, England
"I'm not too keen on the song. I find it kind of annoying."
Georgie, 11, England
"WOW!! It's amazing!"
Nil, 10, Sussex, England
"I like her new song!"
Rosie, 9, Cheshire, England
"I love this song... finally Beyonce has come back! Haven't heard of her in ages! Keep producing songs... I love you Beyonce!"
Caitlin, 12, Cheshire, England
"I really like Beyonce! Her dance moves are pretty amazing!"
Shania, 11, Herefordshire, England
"This is a bad song - she can do much better!"
Ella, 12, Portsmouth, England
"I think it is ok but still a bit cheesy."
Safiya, 11, Birmingham, England
"I think it is really really good, it shows how strong girls are!!"
Nina, 13, Hull, England
"Beyonce is so so cool! Me and my mother like her song."
Ellie, 6, Port Talbot, Wales
"I love Beyonce and her single!"
Naiya, 10, London, England
"I love her new song but how did she come up with the words?!"
Leah, 9, Stirling and Falkirk, Scotland
"This song has a nice beat and rhythm to it!"
Emma, 13, Stoke, England
"She's the best singer in the world!"
Stephanie, 9, Sussex, England
"I absolutely love this song!! It's got a great beat and rhythm to it."
Maryum, 11, Slough, England
"I like Beyonce's new song, it is very good!"
Charlotte, 7, Blackpool, England
"I love Beyonce, it's my favourite song ever!! QUEEN B FOR LIFE."
Karis, 9, Blackpool, England
"This song is alright but a bit weird."
Charlotte, 10, Derby, England
"I'm not sure about this song."
Holly, 9, Derby, England
"It is the best song ever! Love it! Whenever it comes on I sing along."
Madysun, 9, Peterborough, England
"It is cheesy! My friends and I mock it at lunch. It's kinda funny but annoying after you hear it more than 5 times."
Maegan, 10, Co. Cork, Ireland
"Love it! In our dance lesson we did the dance as our warm up! So fun!"
Anna, 12, London, England
"Keep going girl!"
Andrane, 12, Luton, England
"I've never liked any Beyonce songs but this is better. Love the theme as well!"
Chiara, 12, Renfrewshire, Scotland
"I Think Beyonce is a really good singer. I like this song, even if it's saying that girls run the world."
James, 11, Norwich, England
"I hate this Song! I like her other songs way better!"
Kalika, 11, USA
"I loved this song. I totally think there should be more songs about girl power. Some people think it's sexist, but it isn't."
Megan, 10, Birmingham, England
Chloe, 12, Kent, England
"I absoloutly LOVE this song!"
Kirsty, 10, London, England
"I Love Beyonce and her new song because it's a really catchy and good song to dance too!"
Sadia, 14, London, England
"This is not Beyonce's best song, it's only like this because she wants to beat Lady Gaga who is my idol."
Lucy, 12, Nottingham, England
"I hate this song! It's got no meaning to it, a song has to have meaning, and it's sexist!!"
Beth, 13, Wigan, England
"I think her song is really catchy and I love how she is talking about girls!"
Natalie, 11, Yorkshire, England
"I don't like Beyonce that much but this song is sick!!"
Amani, 12, Birmingham, England
"I think it's a bit boring, she says the same thing over and over again, but I still love the song."
Leah, 11, London, England
"HATE HATE HATE!!"
Omazie, 13, London, England
"I think it is a massive hit, keep it up Beyonce!"
Gabriel, 13, Cumbria, England
"It's too fast and it's a racket!"
Harry, 11, Suffolk, England
"This song is hot but the video's not."
Amy, 11, Rome, Italy
"Amazing, just wonderful! Absolutely outstanding."
Kelsey, 13, Glasgow, Scotland
"Love this song- I don't think it's one of the best songs she's done but nevertheless it's still got me moving and repeating it again and again!"
Lucy Ann, 12, Wolverhampton, England
"I love Beyonce's Run the World, it's a cool and upbeat song."
Saphire, 9, London, England
"Her song is so good, I love the beat!"
Panashe, 10, Luton, England
"I think its good, but she has had better songs. A bit of a let-down but it is ok though."
Ruthie, 12, Ireland
"I don't like this song, she has much better songs than this, she could do so much better!
Niamh, 12, Glasgow, Scotland
"It's REALLY annoying with the Po De Floor replay in it but I love Beyonce to bits!"
Abi, 13, Birmigham, England
"I love her new song, it's amazing!"
Lauren, 14, Cardiff, Wales
"I think the song is ok."
Kayla, 11, Manchester, England
"It's an amazing song!"
Hannah, 13, Birmingham, England
"I love this song, I'm a Beyonce fan!"
Ahlam, 13, Manchester, England
"Love it, best song ever!"
Cece, 12, Manchester, England
"Good song and catchy but she needs to make the video more interesting."
Joe, 10, London, England
"WOW! I absolutely love it! When I was practising for sports day I was listen to it for ages! I'm happy I'm a girl. Who run the world? Girls!"
Aoibh, 8, Derry, N. Ireland
"I think this song shows just how good girls can be. Normally, boys think they're better than us girls but this song proves them wrong! GO BEYONCE!"
Dayna, 11, Surrey, England
"I am a boy and I think this is putting bad things in little kids minds- suggesting that girls are better than boys when we're all good and bad at different things! Sorry Beyonce, not this time!"
Dharhamjeet, 12, London, England
"I love Beyonce! I love her song Run the World (girls) because it's all about girl power. This song is sooo amazing and inspiring!"
Safa, 11, Birmingham, England
"What a silly song it is. She stole a bit of Ke$has song."
Amelia and Erin, 9, Derbyshire, England
"I think it is brilliant, I listen to it all the time and she's right, girls run the world!!"
Poppy, 8, Stockport, England
"I HATE Beyonce! She is the WORST singer EVER!"
Martha, 10, Stockport, England
"Beyonce's songs are always terrific and Run The World is MEGA-TERRIFIC! I am a big fan."
Nora, 11, London, England
"I think Beyonce's new song is really good and I like how she has put diffrent styles of music in it."
Leah, 14, Leicestershire, England
"I think the song Run The World is very impressive and has the best video ever! Without Beyonce the song wouldn't be that great, she makes everyone proud thanks to her hard work!"
Milli, 12, London, England
"I love Beyonce! But the tune has been copied by Major Lazer - Pon De Floor."
Gia, 14, London, England
"I love Beyonce so much, she is so incredibly talented!"
Connie, 12, Glasgow, Scotland
"I love this song so much, it is the best song ever!"
Jasmine, 11, London, England
"I absolutely love this song! It's in my head 24/7! LOVE YOU BEYONCE!"
Amani, 12, Liverpool, England
"This song is amazing! I keep replaying it!"
Caitlin, 10, London, England
"It's amazing!! It puts me in a party mood!"
Becky, 11, Sheffield, England
"I love Beyonce but this is not fantastic, I was disappointed. The message is interesting and controversial, but all in all I think it's boring. I thought the tune was good, but I think she may have copied Shakira's amazing This Time For Africa."
Clea, 12, Galway, Ireland
"I absolutley love this song I give it 1000/1000! The tune is quite catchy and gets me up and dancing!!! Who run the world? Girls, girls!!"
Simi, 9, Essex, England
"I love it, I'm a really big fan. Love you Beyonce!"
Munisah, 10, Edinburgh, Scotland
"I think Beyonce's new song is very catchy and has a good tune!"
Darcey, 8, UK
"The first bit is awesome and then it gets a little worse."
Kirsty, 11, Devon, England
"My brother hates this song, but I really like it!"
Zoe, 12, London, England
"The song is smashing. Girls ROCK!!"
Toni, 8, Leicester, England
"I love her song but I think she IS a bit wild!"
Tasha, 13, London, England
"I love this song, it's a great dance tune. It is amazing and so is Beyonce."
Alexis, 9, Dublin, Ireland
"I like the song, it has a really good dance beat."
Zaynab, 11, London, England
"I love that song!"
Natalie, 11, Aberdeen, Scotland
"I love this song and I think it should be at the top of the charts! I love beyonce and I love the video."
Ellie, 12, Wirral , England
"I think it's really good. It's about girls all over the world, they have girl power!"
Zara, 11, Manchester, England
"She is my fave singer!"
Crystal, 14, Nottingham, England
"It's a really catchy tune however I think they should take out when she swears in the songs."
Nikki, 12, London, England
"My opinion on the song is that it is telling the truth. I like the tune to it and the beat and bass, it's really nice and quite different to her other work!"
Simii, 14, London, England
"I hate the song. It is very annoying and the world should be run by both boys and girls, not just girls!"
Andrew, 10, Tweeddale, Scotland
"I love this song! such a good message."
Chantal, 12, Essex, England
"Nice song, and nice dancing. I like it."
Gwendolyn, 10, London, England
Amal, 9, London, England
"I like the way she dances and I like the song, because girls should run the world."
Odera, 8, London, England
"It's not as good as Destiny's Child."
Lauren, 9, Oxford, England
"I love this song, it is so catchy!"
Anna, 10, Peterborough, England
"I think it's a really catchy song and it's quite good. I wouldn't usually listen to Beyonce but this is a good song."
Faizah, 12, Bradford, England