The "Free Bird" lyric, "If I leave here tomorrow, would you still remember me?" was something Lynyrd Skynyrd's guitarist's girlfriend said to him during a fight.
"Cotton Eye Joe" is a folk song dating to the 1800s, but it became a hit when a Swedish act called Rednex did a psychokinetic version in 1994.
Buddy Holly got the title for his hit song "That'll Be The Day" from a phrase John Wayne said in his movie "The Searchers.
When Ed Sheeran's "Thinking Out Loud" climbed to the top of the UK singles chart in its 19th week, the song broke the record for the slowest continual ascent to #1.
Featured in the 1978 musical Evita, "Don't Cry For Me Argentina" became the biggest selling UK hit by a female vocalist (Julie Covington).
The Sam & Dave classic "Soul Man" was re-recorded by Sam Moore and Lou Reed for the 1986 movie Soul Man, about a white guy who pretends to be black so he can get a scholarship to Harvard.
Michael tells the story of "Send Me On My Way," and explains why some of the words in the song don't have a literal meaning.
Can you be married in one country but not another? Only if you're part of a gay couple. One of the first famous singers to come out as a lesbian, Janis wrote a song about it.
The Guns N' Roses rhythm guitarist in the early '90s, Gilby talks about the band's implosion and the side projects it spawned.
The Third Day frontman talks about some of the classic songs he wrote with the band, and what changed for his solo country album.
The Garbage drummer/songwriter produced the Nirvana album Nevermind, and Smashing Pumpkins' Gish and Siamese Dream.
The Creed lead singer reveals the "ego and self-fulfillment" he now sees in one of the band's biggest hits.