"Radioactive" set an industry record for the slowest climb to the top five in the Hot 100 chart's history when it jumped from #6 to #4 in its 42nd week.
The only cover of "American Pie" to chart is by Madonna, whose 2000 version was a minor hit in America but went to #1 in the UK.
"Womanizer" was Britney Spears' comeback song, going to #1 about 10 months after she was institutionalized to get treatment for addictions and mental health issues.
When "Baby Love" reached the top spot, The Supremes became the first Motown act with two #1 hits on the Hot 100.
If you have a whole day to kill, you can check out the full version of Pharrell Williams' "Happy" music clip, which was the world's first ever 24-hour music video.
"Instant Karma" is one of John Lennon's most hopeful songs, written and recorded in one day at a time when he felt people were pulling together in a positive direction.
Tim and his brother Richard are the Furs' foundation; Tim explains how they write and tells the story of "Pretty In Pink."
When you free your mind, your ass may follow, but you have to make sure someone else doesn't program it while it's wide open.
These overtly religious songs crossed over to the pop charts, despite resistance from fans, and in many cases, churches.
Lita talks about how they wrote songs in The Runaways, and how she feels about her biggest hit being written by somebody else.
The Celtic music maker Loreena McKennitt on finding musical inspiration, the "New Age" label, and working on the movie Tinker Bell.
The longtime bassist of Earth, Wind & Fire discusses how his band came to do a holiday album, and offers insight into some of the greatest dance/soul tunes of all-time.