This is the opening section of the title track from King Crimson's third album. The entire piece is about a prince taking part in an epic battle. It lasts 23 minutes, 15 seconds, making it the longest composed recording by King Crimson.
This opening song features Yes's Jon Anderson in his only ever contribution to a King Crimson recording. Anderson was invited to sing on the track as it was out of King Crimson vocalist Gordon Haskell's range.
Will.I.am, literally dreamt up "I Gotta Feelin'." Said the Black Eyed Pea: "Have you ever had a dream where there's a melody in your dream? I'll wake up out of my sleep and record that! 'I Gotta Feelin' was one of those songs."
The bedrock of David Guetta's Nicki Minaj-featuring single "Hey Mama" is a sample of "Rosie," a 1940s prison recording from folk archivist Alan Lomax that songwriter Esther Dean first showed the French DJ on YouTube.