"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.
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.
Imagine Dragons lead singer Dan Reynolds says their 2012 hit "Radioactive" is "a song about having an awakening; kind of waking up one day and deciding to do something new, and see life in a fresh way."
Robert Plant's "Heaven Knows" is a satirical look at the '80s, when style seemed to trump substance.
Billy Joel wrote "We Didn't Start The Fire" after a 21-year-old told him, "everyone knows that nothing happened in the '50s."
A pre-famous Rupaul is in the video for "Love Shack" by The B-52s. He had a solo hit with "Supermodel" a few years later.
As a 5-year-old, Brandi was writing lyrics to instrumental versions lullabies. She still puts her heart into her songs, including the one Elton John sings on.
The Sevendust frontman talks about the group's songwriting process, and how trips to the Murder Bar helped forge their latest album.
Charlie discusses the songs that made him a Southern Rock icon, and settles the Devil vs. Johnny argument once and for all.
Lots of life lessons in these Eagles lyrics - can you match them to the correct song?
An interview with Dr. John Covach, music professor at the University of Rochester whose free online courses have become wildly popular.
The Celtic music maker Loreena McKennitt on finding musical inspiration, the "New Age" label, and working on the movie Tinker Bell.