
Avril Lavigne's 2011 song "Darlin" was written much earlier; she says it's the second song she ever wrote, composed when she was an unsigned 15-year-old living in Napanee, Ontario. The song reflects those years when she was "trying to figure it all out."

The first version of The Beatles' "Helter Skelter" was a 27-minute jam, so you can imagine what Ringo was going through pounding away on drums. To convince the guys he needed a break, he screamed, "I've got blisters on my fingers!" This was included on the fadeout.

Aimee Mann's "Save Me" was inspired by her relationship with the actor Dave Foley, who had gone through a divorce and was an emotional train wreck.

Walk The Moon vocalist Nicholas Petricca got the idea for "Shut Up and Dance" when he and his girlfriend were taking forever to get drinks at a Los Angeles club bar. Petricca was getting frustrated, so his girlfriend told him to "shut up and dance with me!'"

Rapper Memphis Bleek's 2005 album track "The One" is notable for featuring a then-unknown Rihanna on the hook. It was the Barbadian singer's first-ever major-label appearance.

When "Last Friday Night (T.G.I.F.)" climbed to #1 on the Hot 100, Katy Perry became the first woman to send five songs from one album to the top of the charts. The four previous chart-toppers from her Teenage Dream set were "California Gurls," "Teenage Dream," "Firework" and "E.T."
At 80 years old, Yoko has 10 #1 Dance hits. She discusses some of her songs and explains what inspired John Lennon's return to music in 1980.
Was Janet secretly married at 18? Did she gain 60 pounds for a movie role that went to Mariah Carey? See what you know about Ms. Jackson.
Dave reveals the inspiration for "Feelin' Alright" and explains how the first song he ever wrote became the biggest hit for his band Traffic.
Harry Wayne Casey tells the stories behind KC and The Sunshine Band hits like "Get Down Tonight," "That's The Way (I Like It)," and "Give It Up."
We ring the Hell's Bells to see what songs and rockers are sincere in their Satanism, and how much of it is an act.