Before she was famous, Lady Gaga was a staff songwriter, and wrote the song "Quicksand," which Britney Spears recorded in 2008.
The fadeout on Drake's "Hotline Bling" lasts 55 seconds - one of the longest outros of any hip-hop hit.
Musically, the Twisted Sister song "We're Not Gonna Take It" is based on the Christmas tune "O Come All Ye Faithful."
In the song "God," Tori Amos makes the point that if there's God, there must also be a Goddess because there are no male-only species.
Amy Winehouse really did refuse "Rehab." She said she drank because she was lovesick, and "you can't go into rehab for that."
Michael McDonald's "I Keep Forgettin'" is based on a '60s song with the same title written by Jerry Leiber and Mike Stoller.
"25 or 6 to 4" to "Semi-Charmed Life" - see if you can spot the songs that are really about drugs.
Here is the church, here is the steeple - see if you can identify these lyrics that reference church.
Was Long Tall Sally a cross-dresser? Did he really set his piano on fire? See if you know the real stories about one of rock's greatest innovators.
Chris Stein of Blondie shares photos and stories from his book about the New York City punk scene.
Rob Halford, Richie Faulkner and Glenn Tipton talk twin guitar harmonies and explain how they create songs in Judas Priest.
Meshell Ndegeocello talks about recording "Wild Night" with John Mellencamp, and explains why she shied away from the spotlight.