Eminem spits a total of 1,560 words on "Rap God," earning him an entry in the 2015 Guinness Book of Records for "most words in a hit single."
Bono came up with the idea of focusing on a soldier's last thoughts as he dies from his wounds in the U2 song "White As Snow" after reading William Golding's 1956 novel Pincher Martin.
John Lennon got the title of the Beatles song "Happiness Is A Warm Gun" from an article in a magazine published by the National Rifle Association.
"End Of The Road" by Boyz II Men comes off a bit thirsty, especially when we find out the girl cheated on him. The sketch show In Living Color parodied the song, with the group as "Boyz II Wimps."
The Devo song "Freedom Of Choice" is about mindless consumerism - how people like to make frivolous choices, but otherwise want to be told what to do.
Paul McCartney wrote "Blackbird" in Scotland after reading about race riots in the US, triggered when federal courts forced the racial desegregation of the Arkansas capital's school system.
"Lullaby" singer Shawn Mullins on "Beautiful Wreck," beating the Devil, and his writing credit on the Zac Brown Band song "Toes."
Greg talks about writing songs of "universal truth" for King Crimson and ELP, and tells us about his most memorable stage moment (it involves fireworks).
A popular contemporary folk singer, Williams still remembers the sticky note that changed her life in college.
dUg dIgs into his King's X metal classics and his many side projects, including the one with Jeff Ament of Pearl Jam.
An interview with Frankie Valli, who talks about why his songs - both solo and with The Four Seasons - have endured, and reflects on his time as Rusty Millio on The Sopranos.
Cain talks about the divine inspirations for "Don't Stop Believin'" and "Faithfully."