It really was so easy for Linda Ronstadt to score a hit with her Buddy Holly cover of "It's So Easy." She would sometimes change the lyric to: "It's so easy to have a hit, all you have to do is recycle it."
Christina Perri's "Jar Of Hearts," written about her ex, became a big hit after it was used in a routine on So You Think You Can Dance.
The actor Dan Aykroyd sang on "We Are The World." LaToya Jackson did too, so we know they weren't all that picky.
Janet Jackson's "Alright" video features Cab Calloway and Cyd Charisse, stars of musicals she loved as a kid.
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."
Justin Timberlake originally wrote "Gone" for Michael Jackson, but his team turned it down, so 'N Sync cut it instead.
Scaramouch, a hoople and a superhero soundtrack - see if you can spot the real Queen stories.
An interview with Dr. John Covach, music professor at the University of Rochester whose free online courses have become wildly popular.
Taylor talks about "The Machine" - the hits, the videos and Clive Davis.
David Gray explains the significance of the word "Babylon," and talks about how songs are a form of active imagination, with lyrics that reveal what's inside us.
Martyn talks about producing Tina Turner, some Heaven 17 hits, and his work with the British Electric Foundation.
The Scorpions and UFO guitarist is also a very prolific songwriter - he explains how he writes with his various groups, and why he was so keen to get out of Germany and into England.