"Take Me Home Country Roads" is set in West Virginia, but John Denver had never been there when he recorded the song. The country roads represent a sense of belonging.
Demi Lovato recorded a Spanish version of her song "Skyscraper," but she doesn't speak Spanish. She performed it on a Latin music awards show with help from a teleprompter.
"Sister Christian" was written by Night Ranger drummer Kelly Keagy, who was imploring his younger sister to be careful in her reckless youth, especially when "motoring" (driving around) with friends.
The Rick James song "Cold Blooded" is about Linda Blair from The Exorcist, his girlfriend at the time. In James' lingo, "cold blooded" means sexy, not cruel.
When he met Delilah DiCrescenzo, Plain White T's lead singer Tom Higgenson told her he'd write a song about her, and came up with the first verse of "Hey There Delilah" on the spot.
"You Get What You Give" by The New Radicals was the first hit song to use the word "frenemies" in the lyrics.
Find out how God and glam metal go together from the Stryper frontman.
When singers started spoofing their own songs on Sesame Street, the results were both educational and hilarious - here are the best of them.
Elvis, Little Richard and Cheryl Cole have all sung about Teddy Bears, but there is also a terrifying Teddy song from 1932 and a touching trucker Teddy tune from 1976.
Jim talks about the impact of "The Middle" and uses a tree metaphor to describe his songwriting philosophy.
The Brazilian rocker sees pictures in his riffs. When he came up with one of his gnarliest songs, there was a riot going on.
"25 or 6 to 4" to "Semi-Charmed Life" - see if you can spot the songs that are really about drugs.