Jerry Cantrell used a talkbox to create the warbling vocal effect on the Alice in Chains song "Man In The Box."
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.
"Your Time Is Gonna Come" became the first Led Zeppelin song to be covered when Sandie Shaw recorded it in 1969.
John Lennon's lead guitar work on Yoko Ono's "Walking On Thin Ice" proved to be his final creative act. It was upon their return home after completing laying down the track that Lennon was murdered by Mark David Chapman.
"Do They Know It's Christmas?" by Band-Aid was the first big group charity single. It was organized by Bob Geldof, who a year later put together "We Are The World" and Live Aid.
The Bryan Adams song "(Everything I Do) I Do It For You" was almost rejected for the movie Robin Hood: Prince Of Thieves because it didn't sound medieval enough.
A top New York studio musician, Ralph played guitar on many '60s hits, including "Lightnin' Strikes," "A Lover's Concerto" and "I Am A Rock."
Dan cracked the Top 40 with "Ritual," then went to India and spent 2 hours with the Dalai Lama.
With Bernie Taupin, Martin co-wrote the #1 hits "We Built This City" and "These Dreams." After writing the Pretty Woman song for Go West, he had his own hit with "In the House of Stone and Light."
The top chant artist in the Western world, Krishna Das talks about how these Hindu mantras compare to Christian worship songs.
The man who ran Nirvana's first label gets beyond the sensationalism (drugs, Courtney) to discuss their musical and cultural triumphs in the years before Nevermind.
The stories behind the biggest hit songs about trucking.