A one-ton bell was custom made for AC/DC's "Hell's Bells." The recording was slowed to half speed to make it sound like a more ominous two-ton bell.
An unknown Kesha (known then as Ke$ha) sang on Flo-Rida's #1 hit "Right Round," but refused to appear in the video because she wanted to make a name for herself.
"Ain't No Sunshine" by Bill Withers was inspired by the Jack Lemmon movie Days of Wine and Roses.
Michael Jackson wrote the Diana Ross hit "Muscles," which he named after his pet boa constrictor.
"Jessie's Girl" tells the true story of a girl Rick Springfield was crushing on, but her boyfriend's name was really Gary and he was more of an acquaintance than a friend.
"Master Blaster (Jammin')" is Stevie Wonder's tribute to Bob Marley, released less than a year before Marley died.
When a song describes a wedding, it's rarely something to celebrate - with one big exception.
"25 or 6 to 4" to "Semi-Charmed Life" - see if you can spot the songs that are really about drugs.
U2, Carly Simon, Joanna Newsom, Brian Wilson and Fiona Apple have all gone to Van Dyke Parks to make their songs exceptional.
Medley looks back on "Unchained Melody" and "You've Lost That Lovin' Feelin'" - his huge hits from the '60s that were later revived in movies.
These overtly religious songs crossed over to the pop charts, despite resistance from fans, and in many cases, churches.
dUg dIgs into his King's X metal classics and his many side projects, including the one with Jeff Ament of Pearl Jam.