
An unexpected guest vocal: Marianne Faithfull on the Metallica song "The Memory Remains." A star in the '60s, this collaboration helped revive her career.

The title "25 Or 6 To 4" by Chicago refers to the time it was written: either 25 minutes to 4 (3:35) or 26 (3:34).

Dan Tyminski, the singer on Avicii's "Hey Brother" is the same guy who sang lead vocal on "A Man Of Constant Sorrow" in the movie O’ Brother, Where Art Thou.

In Gary Numan's "Cars," the message is that cars lead to a mechanical society devoid of personal interaction. This didn't stop automakers from using it in commercials. Both Nissan and Oldsmobile have used it in ads.

"Love Is A Battlefield" was written as a ballad, but Pat Benatar's guitarist/husband turned it into an uptempo song.

"Who Let The Dogs Out" won a Grammy. It took the award for Best Dance Recording in 2000.
The stories behind the biggest hit songs about trucking.
Zac tells the story of Hanson's massive hit "MMMbop," and talks about how brotherly bonds effect their music.
A band so baffling, even their names were contrived. Check your score in the Ramones version of Fact or Fiction.
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.
The Celtic music maker Loreena McKennitt on finding musical inspiration, the "New Age" label, and working on the movie Tinker Bell.
"I'll Be" was what Edwin called his "Hail Mary" song. He says it proves "intention of the songwriter is 180 degrees from potential interpretation by an audience."