Here's what happens when an opening act is really out of place with the headliner, like when Beastie Boys opened for Madonna.
The writer of "Rainy Night in Georgia" and "Polk Salad Annie" explains how he cooks up his Louisiana swamp rock.
Eddie (played by Johnny Depp in the video) found fame fleeting, but Chuck Berry's made-up musician fared better.
Doors expert Jim Cherry, author of The Doors Examined, talks about some of their defining songs and exposes some Jim Morrison myths.
From "Some Day My Prince Will Come" to "Let It Go" - how Disney princess songs (and the women who sing them) have evolved.
Iron Maiden, Adele, Toto, Eminem and Earth, Wind & Fire are just some of the artists with songs directly inspired by movies - and not always good ones.
Katy Perry co-wrote Iggy Azalea's hit single "Black Widow." Perry was originally going to sing on the track, but she couldn't fit it into her schedule, so Rita Ora provided the sung vocals instead.
"Love Is A Battlefield" was written as a ballad, but Pat Benatar's guitarist/husband turned it into an uptempo song.
When "When I Think of You" hit #1, Janet and Michael Jackson became the first siblings with chart topping solo hits in the United States.
Props to Aretha Franklin: her song "Respect" introduced the term "propers" as a sign of proper respect.
Dido helped shut down a Neo-Nazi Web site after learning it was using "White Flag" to promote its hateful messages. Owners of the site had misinterpreted the track as racist and thought they represented their white supremacy views.
Jimmy Webb was inspired to write "Up-Up and Away" by a balloon that his friend William F. Williams flew on promotions for radio station KMEN.