Before she was famous on Friends, Courteney Cox danced on stage with Bruce Springsteen in his "Dancing In The Dark" video.
Beyoncé married Jay-Z five months before releasing "Single Ladies (Put a Ring On It)," a song she sang in character as her alter-ego, Sasha Fierce.
Eminem sampled Dido's "Thank You" for his song "Stan," and Dido appeared in his video as Stan's unfortunate wife.
Shaboozey's "A Bar Song (Tipsy)" is a country reworking of J-Kwon's hip-hop hit "Tipsy," with the setting changed from a club to a dive bar.
Guns N' Roses' Appetite For Destruction album includes a song called "Rocket Queen," identified in the liner notes as Barbi Von Greif. Axl Rose says she "kind of kept me alive for a while."
Jay-Z was going to ask Mary J. Blige to duet on "Empire State of Mind," but he decided on Alicia Keys when he heard the piano stabs on the track.
When you free your mind, your ass may follow, but you have to make sure someone else doesn't program it while it's wide open.
The Red Hot Chili Peppers have some rather unusual song titles - see if you can spot the real ones.
Have you got the smarts to know which of these graduation song stories are real?
Long before Eminem, Justin Bieber and Nicki Minaj created alternate personas, David Bowie, Bono, Joni Mitchell and even Hank Williams took on characters.
The Doobies guitarist and lead singer, Tom wrote the classics "Listen To The Music," "Long Train Runnin'" and "China Grove."
Despite appearances on Carson, Leno and a Pennebaker film, Williams remains a hidden treasure.