Blue Ivy Carter is racking up some serious industry credits for a 3-year-old. After appearing on songs by her father Jay Z and mother Beyoncé, Blue Ivy is going outside the family tree. In an interview with The Wall Street Journal, Coldplay's Chris Martin revealed that Blue Ivy would be a guest on his band's forthcoming album A Head Full of Dreams. Blue Ivy is part of a "choir" that appears throughout the album.

"The 'choir' started with my two kids coming in after school and recording," Martin said. "We recorded Blue Ivy Carter in New York when her mom Beyoncé was in the studio. It comes from learning about Greek tragedy, where the chorus chimes in at times. To me, when we use that sound, it’s to affirm what I’m saying. 'We agree with you, Chris. Keep singing.”

Martin also revealed that his collaboration with Beyoncé came from a strange desire for Coldplay to have their own version of "Turn Down For What." The result is a song called "Hymn For The Weekend." Martin had this to say about the creative process behind it.

"The original kernel was that I was listening to Flo Rida or something, and I thought, it’s such a shame that Coldplay could never have one of those late-night club songs, like 'Turn Down for What," Martin said. "What would we call it if we had one? I thought I’d like to have a song called 'Drinks on Me' where you sit on the side of a club and buy everyone drinks because you’re so fucking cool. I was chuckling about that, when this melody came — 'drinks on me, drinks on me' — then the rest of the song came out. I presented it to the rest of the band and they said, 'We love this song, but there’s no way you can sing ‘drinks on me.' So that changed into 'drink from me' and the idea of having an angelic person in your life. Then that turned into asking Beyoncé to sing on it."

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