Eminem spits a total of 1,560 words on "Rap God," earning him an entry in the 2015 Guinness Book of Records for "most words in a hit single."
"Pink Cadillac" was a B-side for Bruce Springsteen in 1984, but after Aretha Franklin sang about pink Cadillacs on "Freeway Of Love" the following year, Natalie Cole covered the song and had a hit with it in 1988.
The Matchbox Twenty song "3 AM" is about the difficult times lead singer Rob Thomas spent caring for his mother, who had cancer.
When Metallica performed in China in 2013, they were not allowed to play "Master of Puppets."
"Here Comes Your Man" is the closest the Pixies came to a hit in America. It was rumored to be about a drug dealer, but Black Francis says it's just a story about some hobos who travel by train and die in an earthquake.
Elton John had a huge hit duetting with Kiki Dee on "Don't Go Breaking My Heart," but he's also performed it with RuPaul and Miss Piggy.
Shows like Dawson's Creek, Grey's Anatomy and Buffy the Vampire Slayer changed the way songs were heard on TV, and produced some hits in the process.
Doubt led to drive for Francis, who still isn't sure why one of Status Quo's biggest hits is so beloved.
The lead singer on "Da Doo Ron Ron" and "Then He Kissed Me," La La explains how and why Phil Spector replaced The Crystals with Darlene Love on "He's A Rebel."
The guitarist/songwriter explains how he came up with his signature sound, and deconstructs some classic Fear Factory songs.
Todd Rundgren explains why he avoids "Hello It's Me," and what it was like producing Meat Loaf's Bat Out of Hell album.
Some songs get a second life when they find a new audience through a movie, commercial, TV show, or even the Internet.