Christa McAuliffe holding a model of the Challenger, on which she perished in January 1986; Denver's song is a moving tribute to her and her crew mates.
Bob Dylan was little known when he released "Blowin' In The Wind" so the cover versions - especially by Peter, Paul and Mary and Stan Getz - were much more popular at the time.
"Airplanes" by B.o.B was written by Lupe Fiasco, who recorded it but decided to pass.
"No Scrubs" introduced the term "scrub" to the popular lexicon, and defined it in the opening lines ("a scrub is a guy that think he's fine...").
The Fratellis song "Chelsea Dagger" was named for their lead singer's wife - it was her burlesque name.
The Beastie Boys' "No Sleep Till Brooklyn" is a parody of Heavy Metal. Kerry King of Slayer played guitar on the track - purposefully out of tune in parts.
Tim McGraw recorded "Live Like You Were Dying" just two weeks after his own father passed away.
Ozzy, Guns N' Roses, Judas Priest and even Michael Bolton show up in this Classic Metal quiz.
He's a singer and an actor, but as a songwriter Paul helped make Kermit a cultured frog, turned a bank commercial into a huge hit and made love both "exciting and new" and "soft as an easy chair."
Rock Stars - especially those in the metal realm - are often enlisted for horror movies. See if you know can match the rocker to the role.
Richard explains how Joe Walsh kickstarted his career, and why he chose Hazard, Nebraska for a hit.
Writing great prog metal isn't easy, especially when it's for 60 musicians.
Where words like "email," "thirsty," "Twitter" and "gangsta" first showed up in songs, and which songs popularized them.
