45% of the royalties for "Somebody That I Used To Know" go to the estate of the Brazilian classical guitarist Luiz Bonfá, whose song "Seville" Gotye sampled.
"Crazy Train" by Ozzy Osbourne is about the Cold War concept of Mutually Assured Destruction (M.A.D.) should any nuclear missile be fired.
"The Long and Winding Road" became The Beatles' last US #1 song on June 13, 1970.
MC Skat Kat was created for the remix of "Opposites Attract," which was released as the last single from her Forever Your Girl album. The team that created the Kat also did a-ha's "Take On Me" video.
Katy Perry's "Dark Horse" was co-written by Sarah Hudson, who is a singer-songwriter and a member of the Pop group Ultraviolet Sound. Though Sarah isn't related to Katy (whose real name is Katy Hudson), she is the first cousin of another famous person with the same name, the actress Kate Hudson.
"Run To You" by Bryan Adams was written for Blue Oyster Cult, and the guitar part is modeled after "Don't Fear The Reaper." BOC turned it down, so Adams recorded it for his album Reckless.
The stories behind the biggest hit songs about trucking.
Martyn talks about producing Tina Turner, some Heaven 17 hits, and his work with the British Electric Foundation.
The Brazilian rocker sees pictures in his riffs. When he came up with one of his gnarliest songs, there was a riot going on.
Guitarist Tony Iommi on the "Iron Man" riff, the definitive Black Sabbath song, and how Ozzy and Dio compared as songwriters.
The men of Sparks on their album Hippopotamus, and how Morrissey handled it when they suggested he lighten up.