Ariana Grande's collaboration with Zedd, "Break Free" came about after the Russian-German producer overheard Grande performing at a label showcase while he was backstage, and he mentioned to his team that he wanted to work with her.
Post Malone came up with "White Iverson" after getting braids in his hair and thinking they looked like basketball legend Allen Iverson's signature cornrows.
"Sunday Girl" was written by Blondie guitarist Chris Stein to cheer up Debbie Harry after her cat had run away whilst they were away on tour. The gray cat was called Sunday Man.
"Here I Go Again" was a #1 hit for Whitesnake in 1987, but it was first released in 1982 with the lyric, "Like a hobo I was born to walk alone."
Hoyt Axton wrote the Three Dog Night hit "Joy To The World." He said the "Jeremiah was a bullfrog" line just came into his head after having a drink of wine.
The Eagles' first single, "Take It Easy," was written by Jackson Browne, who was living in the apartment below Glenn Frey when he wrote it.
Daniel Lanois on his album Heavy Sun, and the inside stories of songs he produced for U2, Peter Gabriel, and Bob Dylan.
How did The Edge get his name? Did they name a song after a Tolkien book? And who is "Angel of Harlem" about?
How a goofy detective movie, a disenchanted director and an unlikely songwriter led to one of the biggest hits in pop history.
A top New York studio musician, Ralph played guitar on many '60s hits, including "Lightnin' Strikes," "A Lover's Concerto" and "I Am A Rock."
The Reverend rants on psychobilly and the egghead academics he bashes in one of his more popular songs.
Gramm co-wrote this gorgeous ballad and delivered an inspired vocal, but the song was the beginning of the end of his time with Foreigner.