Jay-Z's 2012 "Glory" features his daughter Blue Ivy Carter's cries and coos. At less than two days old, she became the youngest ever credited artist to feature on a Billboard chart when the song debuted on R&B/Hip-Hop Songs at #74.

Robert Smith doesn't license Cure songs for commercials, but he made an exception in 2004 when he let Hewlett-Packard use "Pictures Of You." He needed the money to buy the group's back catalogue.

Joni Mitchell wrote "Woodstock" - the most popular song about the festival - but didn't attend the event because she was booked on The Dick Cavett Show.

In the UK, the first #1 hit with a rap was "Candy Girl" by the American boy band New Edition in 1983.

The melody to "Yesterday" came to Paul McCartney in a dream, but the lyrics he had to write consciously. His first attempt at the title was "Scrabble Eggs."

"Yellow" by Coldplay is a deep, meaningful song, but the title has a rather prosaic origin: it came from the phone directory, known as "the yellow pages."
"Mony Mony," "Crimson and Clover," "Draggin' The Line"... the hits kept coming for Tommy James, and in a plot line fit for a movie, his record company was controlled by the mafia.
Can you name Def Leppard's only #1 hit in America? Get rocked with this adrenalized quiz.
Guitarist Tony Iommi on the "Iron Man" riff, the definitive Black Sabbath song, and how Ozzy and Dio compared as songwriters.
The Doobies guitarist and lead singer, Tom wrote the classics "Listen To The Music," "Long Train Runnin'" and "China Grove."
Are classic songs like "Over The Rainbow" and "Take Me Out to the Ballgame" in the public domain?
Ozzy, Guns N' Roses, Judas Priest and even Michael Bolton show up in this Classic Metal quiz.