Al Gore chose an inspiring but obscure campaign song when he ran for president in 2000: "Let The Day Begin" by The Call.
Marilyn Monroe is the subject of Elton John's "Candle In The Wind," but the song is really a look at how we react to celebrities who die young.
One of the most successful cover songs is Fugees' "Killing Me Softly," a 1996 reworking of Roberta Flack's 1973 hit. Originally, Fugees wanted to change the title to "Killing Him Softly" and make it about the dangers of drug abuse.
Beyonce Knowles and Michelle Williams wrote the Destiny's Child song "Girl" for Kelly Rowland as an encouragement for her to end her relationship with a verbally and physically abusive boyfriend.
Lucinda Williams wrote and recorded "Passionate Kisses" four years before it was a hit for Mary Chapin Carpenter.
Zayn's "Pillowtalk" reached #1 on the Hot 100, something his former One Direction bandmates never achieved.
Did they really trade their guitarist to The Doobie Brothers? Are they named after something naughty? And what's up with the band name?
The "Lowdown" and "Lido Shuffle" singer makes a habit of playing with the best in the business.
"How much does it cost? I'll buy it?" Another songwriter told Jonathan to change these lyrics. Good thing he ignored this advice.
A top country songwriter, Barry talks about writing hits for Little Big Town, Tim McGraw and Jason Aldean.
The top chant artist in the Western world, Krishna Das talks about how these Hindu mantras compare to Christian worship songs.
Eddie (played by Johnny Depp in the video) found fame fleeting, but Chuck Berry's made-up musician fared better.