Stevie Wonder wrote his own version of "Happy Birthday" in an attempt to get Martin Luther King's birthday declared a national holiday.
Teen Spirit was a kind of deodorant marketed to young girls. That's where Kurt Cobain got the title "Smells Like Teen Spirit."
Jeff Lynne sang the word "groose" in the chorus of "Don't Bring Me Down" as a nonsense placeholder, but left it in when he found out it means "greetings" in German ("gruss").
"How To Save A Life" by The Fray was inspired by a teenager lead singer Isaac Slade mentored at a camp for troubled youth in Colorado.
Bob Dylan's most popular song is "Like A Rolling Stone," which tells the story of a wealthy woman whose money and friends fall away. Dylan offers these mockingly encouraging words: "When you ain't got nothing, you got nothing to lose."
Salt's "mighty good man" in the Salt-N-Pepa "Whatta Man" video is played by Tupac Shakur.
The 10 biggest "retirement tours" that didn't take.
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.
When he joined Guns N' Roses in 1990, Matt helped them craft an orchestral sound; his mezzo fortes and pianissimos are all over "November Rain."
Roger tells the stories behind some of his biggest hits, including "Give a Little Bit," "Take the Long Way Home" and "The Logical Song."
Kooper produced Lynyrd Skynyrd, played with Dylan and the Stones, and formed BS&T.
One of the first successful female singer-songwriters, Janis had her first hit in 1967 at age 15.