"Head Over Heels" by The Go-Go's is a metaphor for how things were getting out of control for the band; they broke up a year later.
When "Turn On The Radio" topped the January 1, 2011 Country chart, Reba McEntire became the first female solo act to have a #1 hit on that tally in four straight decades.
"Truckin'" was written as the Grateful Dead were starting their long, strange trip, settling into a life of constant touring. They rode busses and holed up in modest hotels to stay grounded.
After the Beastie Boys sampled a bunch of Led Zeppelin songs, Robert Plant did it himself on his 1988 solo hit "Tall Cool One," which sampled "Whole Lotta Love," "Black Dog" and "The Ocean."
Jonah Hill directed the video for Sara Bareilles' song "Gonna Get Over You." It's a mash-up of Grease and West Side Story.
Tina Turner hated "What's Love Got To Do With It" but when her manager convinced her to record it anyway, it became her big comeback hit.
Elvis, Little Richard and Cheryl Cole have all sung about Teddy Bears, but there is also a terrifying Teddy song from 1932 and a touching trucker Teddy tune from 1976.
Zac tells the story of Hanson's massive hit "MMMbop," and talks about how brotherly bonds effect their music.
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.
Inspired by his dear friend, "Seasons in the Sun" paid for Terry's boat, which led him away from music and into a battle with Canadian paper mills.
A drummer for one of the most successful metal bands of the last decade, Chris talks about what it's like writing and performing with Slipknot. Metal-neck is a factor.
Keyboard great David Sancious talks about his work with Sting, Seal, Springsteen, Clapton and Aretha, and explains what quantum physics has to do with making music.