Before recording "Boom Clap" herself, Charli XCX offered the song to Hilary Duff. However, the singer's people turned down the tune declaring it wasn't "cool enough for Hilary."
Adele's "Someone Like You" is the first song with just piano and voice to hit #1 in the history of the Billboard Hot 100, which started in 1958.
Radiohead's "Harry Patch (In Memory Of)" is about the last surviving World War I veteran to fight in the trenches.
One of Tom Petty's most personal songs is "Room At The Top," which he stopped performing because it brought back painful memories.
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.
Irving Berlin said "God Bless America" was "not a patriotic song, but rather an expression of gratitude."
Country songs with titles so bizarre they can't possibly be real... or can they?
At 80 years old, Yoko has 10 #1 Dance hits. She discusses some of her songs and explains what inspired John Lennon's return to music in 1980.
Billie Jean, Delilah, Sara, Laura and Sharona - do you know who the girls in the songs really are?
Despite her reticent personality, Adele's life and music are filled with intrigue. See if you can spot the true tales.
When she released her first album in 1988, Tanita became a UK singing sensation at age 19. She talks about her darkly sensual voice and quirky songwriting style.
