With his X-wife Exene, John fronts the band X and writes their songs.
Evelyn McDonnell, editor of the book Women Who Rock, on why the Supremes are just as important as Bob Dylan.
In this quiz, spot the artist who put Romeo into a song lyric.
The guitarist/songwriter explains how he came up with his signature sound, and deconstructs some classic Fear Factory songs.
The powerhouse producer behind Janet Jackson's hits talks about his Boyz II Men ballads and regrouping The Time.
The '70s gave us Muppets, disco and Van Halen, all which show up in this groovy quiz.
Lil Wayne does an unlikely rap in a remix of the Joe Jonas song "Just In Love." The pair met at the 2008 MTV Video Music Awards.
Madonna's hit "Don't Tell Me" was written by her brother-in-law, Joe Henry, who has produced albums by Hugh Laurie and Bonnie Raitt.
Eminem sampled a song by Labi Siffre on "My Name Is." Siffre, a gay activist, made Em take out some gay humor in the lyric before allowing it.
Billy Joel's "Uptown Girl" is about Christie Brinkley, who he married, but it started as a song about Elle McPherson, who he also went out with.
Feist's "1234" is "about lost love, and the hope to recapture what you once had," but it's best known for the Sesame Street version about counting to four.
Eminem's first hit was "My Name Is," which introduced his alter ego, Slim Shady.