Jethro Tull lead singer Ian Anderson wrote "Aqualung" after looking at pictures of homeless men that his wife took. She got a co-writing credit on the song.
"Back In The U.S.S.R." by The Beatles was play on "California Girls" by The Beach Boys, with "Moscow girls" and "Ukraine girls" instead of the all-American girls.
One of the first teenage stars of the Rock Era was Lesley Gore, who was just 16 when she recorded "It's My Party," a huge hit in 1963. It gave us the iconic phrase, "It's my party, I'll cry if I want to."
The song "Without You," a hit for Nilsson in 1972 and Mariah Carey in 1994, was written and originally recorded by Badfinger in 1970.
Walk The Moon vocalist Nicholas Petricca got the idea for "Shut Up and Dance" when he and his girlfriend were taking forever to get drinks at a Los Angeles club bar. Petricca was getting frustrated, so his girlfriend told him to, "Shut up and dance with me!'"
Bradley Cooper, Michael J. Fox, Rami Malek, Reese Witherspoon, Gwyneth Paltrow and George Clooney: Which actors really sang in their movies?
With his X-wife Exene, John fronts the band X and writes their songs.
As a 5-year-old, Brandi was writing lyrics to instrumental versions lullabies. She still puts her heart into her songs, including the one Elton John sings on.
The man who created Yacht Rock with "Sailing" wrote one of his biggest hits while on acid.
Harry is Derek Smalls in Spinal Tap, Mark Shubb in The Folksmen, and Mr. Burns on The Simpsons.
