The biggest hit of 2015 was "Uptown Funk," a collaboration between Bruno Mars and guitarist/producer Mark Ronson. Ronson says making it took "six or seven months of chasing Bruno around on tour."
Hozier's "Take Me to Church" drew inspiration from the atheist writer Christopher Hitchens. He called it "a bit of a losing your religion song."
The band Simple Minds took their name from the line "He's so simple minded he can't drive his module" in David Bowie's "The Jean Genie."
"Rosanna" by Toto got its name from the actress Rosanna Arquette, who was dating Toto keyboard player Steve Porcaro.
Stevie Nicks wrote "Landslide" before she joined Fleetwood Mac. She was considering going back to school when she and her boyfriend Lindsey Buckingham were asked to join the group.
Richard Harris, who played Professor Dumbledore in the first two Harry Potter movies, had a hit in 1968 with "MacArthur Park."
An interview with Dr. John Covach, music professor at the University of Rochester whose free online courses have become wildly popular.
Kelly Keagy of Night Ranger tells the "Sister Christian" story and explains why he started sweating when he saw it in Boogie Nights.
Test your metal - Priest, Maiden, and Beavis and Butt-head show up in this one.
The man who ran Nirvana's first label gets beyond the sensationalism (drugs, Courtney) to discuss their musical and cultural triumphs in the years before Nevermind.
"25 or 6 to 4" to "Semi-Charmed Life" - see if you can spot the songs that are really about drugs.
Steppenwolf frontman John Kay talks about "Magic Carpet Ride," "Born To Be Wild," and what he values more than awards and accolades.