"Just Dance" was Lady Gaga's first hit, and it also brought the techno-synth sound that had been popular in Europe for the previous decade to the United States.
The K-pop hit "Gangnam Style" became the most-viewed video in YouTube history months after it was released in 2012, a title it held until "See You Again" by Wiz Khalifa overtook it in 2017.
One of the last hits with a track made up almost entirely of uncleared samples is "Groove Is In The Heart" by Deee-Lite in 1990. Soon after, courts ruled that samples needed to be cleared.
Jay-Z's "Hard Knock Life (Ghetto Anthem)" is based on the song "It's A Hard Knock Life" from the Broadway play Annie.
The voice of Waldo in Van Halen's "Hot For Teacher" video was the late Phil Hartman of Saturday Night Live Fame.
If you have a whole day to kill, you can check out the full version of Pharrell Williams' "Happy" music video, the world's first 24-hour music video.
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.
The trail runs from flying saucer songs in the '50s, through Bowie, blink-182 and Katy Perry.
Vince Gill, Emmylou Harris and Lyle Lovett are just a few of the artists who have looked to Clark for insightful, intelligent songs.
Dwarfs on stage with an oversize Stonehenge set? Dabbling in Satanism? Find out which Spinal Tap-moments were true for Black Sabbath.
MTV, a popular TV theme song and Madonna all show up in this '80s music quiz.
Dave explains how the video appropriated the meaning of "Runaway Train," and what he thought of getting parodied by Weird Al.