Village People lead singer Victor Willis, who co-wrote "Y.M.C.A.," insists it isn't a gay song - it's about hanging out with your buddies.
45% of the royalties for "Somebody That I Used To Know" go to the estate of the Brazilian classical guitarist Luiz Bonfá, whose song "Seville" Gotye sampled.
Avril Lavigne said her Goodbye Lullaby track "Darlin" was "probably" the second song she ever wrote. The Canadian composed it when she was an unsigned 15-year-old living in Napanee, Ontario.
Chrissie Hynde got the phrase "Brass In Pocket" from a Northern England slang term meaning you had some money, "brass" meaning coins.
"Sloop John B" is a traditional West Indian folk song, and it was a huge hit for The Beach Boys in 1966. They tweaked the lyric, "This is the worst trip since I've been born" to "...I've ever been on" as a wink to acid culture.
A 1989 track by Kenny G, "Going Home," is the unofficial national closing song in China. The tune is played at the end of train rides, the end of school days, and when malls are about to close.
The Canadian superstar talks about his sudden rise to fame, and tells the stories behind his hits "Sunglasses At Night," "Boy In The Box" and "Never Surrender."
The man who created Yacht Rock with "Sailing" wrote one of his biggest hits while on acid.
On Glen's résumé: hit songwriter, Facebook dominator, and member of Styx.
Martyn talks about producing Tina Turner, some Heaven 17 hits, and his work with the British Electric Foundation.
These Three famous songs actually describe how they were written - late into the evening.
The Christian rapper talks about where his trip to Haiti and his history of addiction fit into his songs.