Katy Perry's song "E.T." came from a beat originally intended for the rap group Three Six Mafia. When her producer accidentally pulled up the beat, Perry asked to use it.
"Happy Xmas (War Is Over)" is based on billboards John Lennon and Yoko Ono posted two years earlier declaring "War Is Over! If You Want It."
Cyndi Lauper came up with the title "Time After Time" when she saw it in TV Guide magazine. It's the name of a 1979 movie about a man who invents a time machine.
There aren't many songs with a scientist as the main character, but Coldplay's "The Scientist" is one of their biggest hits. The guy in the song is brilliant, but despondent because he's lost his girl after neglecting her for his work.
Demi Lovato recorded a Spanish version of her song "Skyscraper," but she doesn't speak Spanish. She performed it on a Latin music awards show with help from a teleprompter.
Just how much did these monsters of rock dabble in the occult?
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."
Starting in Virginia City, Nevada and rippling out to the Haight-Ashbury, LSD reshaped popular music.
Justin wrote the classic "Nights In White Satin," but his fondest musical memories are from a different decade.
You may not recognize his name, but you will certainly recognize Peter Lord's songs. He wrote the bevy of hits from Paula Abdul's second album, Spellbound.
Rock Stars - especially those in the metal realm - are often enlisted for horror movies. See if you know can match the rocker to the role.