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.
Bryan Adams' 1987 song "Heat Of The Night" has the distinction of being the first commercially released cassette single in the US.
Sia Furler wrote “Titanium” and originally wanted to give the tune to Katy Perry. She turned it down so David Guetta recorded it instead using Sia's original demo guide vocal.
Eddie Van Halen played the guitar solo on "Beat It" as a favor to Quincy Jones, who produced the album.
Sleigh bells aren't very punk, but they play throughout the Stooges classic "I Wanna Be Your Dog."
Christina Perri's "Jar Of Hearts," written about her ex, became a big hit after it was used in a routine on So You Think You Can Dance.
Shows like Dawson's Creek, Grey's Anatomy and Buffy the Vampire Slayer changed the way songs were heard on TV, and produced some hits in the process.
Newman makes it look easy these days, but in this 1974 interview, he reveals the paranoia and pressures that made him yearn for his old 9-5 job.
Rob Halford dives into some of his Judas Priest lyrics, talking about his most personal songs and the message behind "You've Got Another Thing Comin'."
Michelle Branch talks about "Everywhere," "The Game Of Love," and her run-in with a Christian broadcasting network.
Wolfgang Van Halen breaks down the songs on his debut album, Mammoth WVH, and names the definitive Van Halen songs from the Sammy and Dave eras.
Bowie's "activist" days of 1964 led to Ziggy Stardust.
