"I Fought The Law" was a hit for The Bobby Fuller Four in 1965. The Clash released their version in 1979, changing the lyrics "I left my baby" to "I killed my baby."
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."
After 47 visits to the Hot 100, Justin Bieber topped the tally for the first time on September 17, 2015 with "What Do You Mean?"
John Legend wrote "All Of Me" about his fiancée Chrissy Teigen. He sang it to her at their wedding ceremony in Como, Italy.
"Airplanes" by B.o.B was written by Lupe Fiasco, who recorded it but decided to pass.
Robert Smith doesn't license Cure songs for commercials, but he made an exception in 2004 when he let Hewlett-Packard use "Pictures Of You." He needed the money to buy the group's back catalogue.
It took him seven years to recover from his American hit "Fool (If You Think It's Over)," but Chris Rea became one of the top singer-songwriters in his native UK.
On "Life Is A Highway," his burgeoning solo career, and the Rascal Flatts song he most connects with.
How a country weeper and a blues number made "rolling stone" the most popular phrase in rock.
Rufus Wainwright on "Hallelujah," his album Unfollow The Rules, and getting into his "lyric trance" on 12-hour walks.
Our chat with Barney Hoskyns, who covers the wild years of Woodstock - the town, not the festival - in his book Small Town Talk.
The Evanescence frontwoman on the songs that have shifted meaning and her foray into kids' music.