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.
The song used in introductions by the Chicago Bulls and many other sports teams is "Sirius" by The Alan Parsons project, the opening track on the Eye In The Sky album.
Dolly Parton was just fine with Whitney Houston's cover of "I Will Always Love You." Said Parton: "She can have the credit. I just want my cash."
Miley Cyrus didn't write "Wrecking Ball" but could very much relate to it. She was having problems in her relationship with Liam Hemsworth, so the theme of giving your love only to have it wrecked really resonated with her.
The first time Jimmy Page, Robert Plant, John Bonham and John Paul Jones all recorded together in the studio was when they backed American singer PJ Proby on his 1969 album Three Week Hero.
The riff for The Sex Pistols' "Pretty Vacant" was pinched from a very unpunk song, the ABBA ballad "S.O.S."
Dennis DeYoung explains why "Mr. Roboto" is the defining Styx song, and what the "gathering of angels" represents in "Come Sail Away."
The stories behind "Whole Of The Moon" and "Red Army Blues," and why rock music has "outlived its era of innovation."
The Cult frontman tells who the "Fire Woman" is, and talks about performing with the new version of The Doors.
The flautist frontman talks about touring with Led Zeppelin, his contribution to "Hotel California", and how he may have done the first MTV Unplugged.
What are the biggest US hits with French, Spanish (not "Rico Suave"), Italian, Scottish, Greek, and Japanese titles?
Was a Beatles song a TV theme? And who came up with those Fresh Prince and Sopranos songs?