
The biggest hit of 2015 was "Uptown Funk," a collaboration between Bruno Mars and guitarist/producer Mark Ronson. Ronson says making it took "six or seven months of chasing Bruno around on tour."
Rascal Flatts is one of those bands whose most famous song is a cover. "Life Is A Highway," which they recorded for the movie Cars in 2006, was written and originally released by Tom Cochrane in 1991.

John Legend wrote "All Of Me" about his fiancée Chrissy Teigen. He sang it to her at their wedding ceremony in Como, Italy.

Pink Floyd's "Talkin' Hawkin'" uses a sample of Stephen Hawking's synthesized voice taken from a speech he made for a 1994 British Telecom commercial.
Jimmy Webb was inspired to write The 5th Dimension song "Up-Up and Away" after seeing a hot-air balloon his friend flew on promotions for the Southern California radio station KMEN.

"I Want It That Way" is the most popular Backstreet Boys song, but the lyric doesn't make much sense. That's because it was written by the hitmaking swedish producers Max Martin and Andreas Carlsson, who were more worried about how it sings than what it means.
When televangelists like Jimmy Swaggart took on rockers like Ozzy Osbourne and Metallica, the rockers retaliated. Bono could even be seen mocking the preachers.
A band so baffling, even their names were contrived. Check your score in the Ramones version of Fact or Fiction.
A popular contemporary folk singer, Williams still remembers the sticky note that changed her life in college.
The Canadian superstar talks about his sudden rise to fame, and tells the stories behind his hits "Sunglasses At Night," "Boy In The Box" and "Never Surrender."
Richie talks about the impact of "Amazed," and how his 4-year-old son inspired another Lonestar hit.