Stevie Wonder was 12 years old when he released his first #1 hit, "Fingertips (Part 2)." He had to wait 22 years for his next one: "Part Time Lover."
Graham Nash wrote the domestic tranquility classic "Our House" about the house he shared with Joni Mitchell. It was a very very very fine house.
Kenny Loggins co-wrote the Doobie Brothers hit "What a Fool Believes," which is about a guy who just can't accept that an affair from long ago was meaningless to her.
Back To The Future wasn't the only movie where Michael J. Fox rocked out: He sang with Joan Jett in the 1987 movie Light Of Day, with a title track written by Bruce Springsteen.
Mariah Carey's "My All" is about her affair with New York Yankees shortstop Derek Jeter.
Medley looks back on "Unchained Melody" and "You've Lost That Lovin' Feelin'" - his huge hits from the '60s that were later revived in movies.
Taylor talks about "The Machine" - the hits, the videos and Clive Davis.
Here's what happens when an opening act is really out of place with the headliner, like when Beastie Boys opened for Madonna.
Does he have beef with Gaga? Is he Sean Lennon's godfather? See if you can tell fact from fiction in the Elton John edition.
An interview with Dr. John Covach, music professor at the University of Rochester whose free online courses have become wildly popular.
