You know the songs: they've saturated the airwaves and some have haunted the Billboard charts all year long. But how well do you really know the hits of 2015? Take our lyrics quiz and find out.
More Music Quiz
The former Metallica bassist talks about his first time writing a song with James Hetfield, and how a hand-me-down iPad has changed his songwriting.
Long before Eminem, Justin Bieber and Nicki Minaj created alternate personas, David Bowie, Bono, Joni Mitchell and even Hank Williams took on characters.
Graham Nash tells the stories behind some of his famous songs and photos, and is asked about "yacht rock" for the first time.
Did Marvin try out with the Detroit Lions? Did he fake crazy to get out of military service? And what about the cross-dressing?
Oliver Leiber talks about writing and producing hits for Paula Abdul, and explains his complicated relationship with his father, the songwriter Jerry Leiber.
How well do you know your protest songs (including the one that went to #1)?
"November Rain" by Guns N' Roses has a literary influence: The lyric is based on a story called Without You by Del James.
The names Louise, Jack, Marie and Milo all show up in the song "Footloose." Marie was the mother of Dean Pitchford, who co-wrote it.
The Sam & Dave classic "Soul Man" was re-recorded by Sam Moore and Lou Reed for the 1986 movie Soul Man, about a white guy who pretends to be black so he can get a scholarship to Harvard.
"Renegade" by Styx wasn't a big hit when it was released in 1978, but it became one of their most popular songs thanks in part to the Pittsburgh Steelers, who started playing it at home games in 2001 to fire up the team and fans.
The Cure lead singer Robert Smith wrote "Lovesong" as a wedding present for his fiancée, Mary, shortly before their marriage. They met when he was 14; he says Mary helped him through many difficult periods and essentially saved his life.
"Killing An Arab" by The Cure was inspired by Albert Camus' book The Stranger.