Bruce Sprinsteen said "Rosalita (Come Out Tonight)" was "the best love song I ever wrote."
"After Midnight" was written by the Oklahoma guitarist J.J. Cale, who was dirt poor until Eric Clapton recorded his song and turned it into a hit.
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 French part in Talking Heads' "Psycho Killer" explains that the killer is going after a girl, like Norman Bates in the movie Psycho.
"Stop Your Sobbing" was first recorded by The Kinks in 1964. It became the Pretenders first single 15 years later, leading to a relationship between Ray Davies and Chrissie Hynde.
The actor Dan Aykroyd sang on "We Are The World." LaToya Jackson did too, so we know they weren't all that picky.
JJ talks about The Stranglers' signature sound - keyboard and bass - which isn't your typical strain of punk rock.
The lead singer and pianist for Procol Harum, Gary talks about finding the musical ideas to match the words.
Chad tells tales from his time as drummer for Nirvana, and talks about his group Before Cars.
Just like Darrin was replaced on Bewitched, groups have swapped out original members, hoping we wouldn't notice.
Rosanne talks about the journey that inspired her songs on her album The River & the Thread, including a stop at the Tallahatchie Bridge.
"Dead Skunk" became a stinker for Loudon when he felt pressure to make another hit - his latest songs deal with mortality, his son Rufus, and picking up poop.