Paul McCartney wrote "Ebony and Ivory," his duet with Stevie Wonder, after a tiff with his wife Linda. "It was like, 'Why can't we get it together- our piano can,'" he explained.
The title of Florence + the Machine's "How Big, How Blue, How Beautiful" was inspired by the Los Angeles skyline.
The Annie Lennox hit "No More I Love You's" is a cover, originally sung by a man.
Frankie Goes to Hollywood's "Two Tribes" features British actor Patrick Allen reading extracts from a government civil defense leaflet.
Meghan Trainor and her producer Kevin Kadish wrote "All About That Bass" for another artist to record, but after Epic Records boss LA Reid heard Meghan play a demo of the song on a ukulele, he signed her to his label and told her she should sing it.
Katy Perry co-wrote Iggy Azalea's hit single "Black Widow." Perry was originally going to sing on the track, but she couldn't fit it into her schedule, so Rita Ora provided the sung vocals instead.
In this quiz, spot the artist who put Romeo into a song lyric.
Director Mark Pellington on Pearl Jam's "Jeremy," and music videos he made for U2, Jon Bon Jovi and Imagine Dragons.
Rick Astley on "Never Gonna Give You Up," "Cry For Help," and his remarkable resurgence that gave him another #1 UK album.
Genesis' key-man re-examines his solo career and the early days of music video.
Steppenwolf frontman John Kay talks about "Magic Carpet Ride," "Born To Be Wild," and what he values more than awards and accolades.
Chris tells the story of "Wicked Game," talks milkshakes and moonpies at Sun Records, and explains why women always get their way.