"Airplanes" by B.o.B was written by Lupe Fiasco, who recorded it but decided to pass.
The Matchbox Twenty song "3 AM" is about the difficult times lead singer Rob Thomas spent caring for his mother, who had cancer.
Paul McCartney based the "Eleanor Rigby" story on old ladies he met at his housing estate. He saw how sometimes when they died, nobody really noticed.
The actress Michelle Pfeiffer gets namechecked in the 2014 megahit "Uptown Funk" ("Michelle Pfeiffer, that white gold"). When it was released, "Riptide" by Vance Joy was on the charts; that song also mentions her ("Closest thing to Michelle Pfeiffer that you've ever seen").
Ed Sheeran's "Bloodstream" was written after an experience taking MDMA during a wedding celebration in Ibiza; it's basically about all the feelings that he got from that time.
The first hit song that was used in a commercial before it was released as a single was "I'd Like To Teach The World To Sing," which was written for a Coke ad.
Are classic songs like "Over The Rainbow" and "Take Me Out to the Ballgame" in the public domain?
Despite appearances on Carson, Leno and a Pennebaker film, Williams remains a hidden treasure.
The 10 biggest "retirement tours" that didn't take.
How well do you know your David Bowie lyrics? Take this quiz to find out.
Bradley Cooper, Michael J. Fox, Rami Malek, Reese Witherspoon, Gwyneth Paltrow and George Clooney: Which actors really sang in their movies?
Tyler talks about his true love: songwriting. How he identifies the beauty in a melody and turns sorrow into art.