Lady Gaga says that "Poker Face" is about her personal experience with bisexuality; being with a man but thinking about a woman.
Tom Cochrane wrote "Life Is A Highway" to pull himself out of a funk following an exhausting humanitarian trip to Africa.
"Paper Planes" was inspired by M.I.A.'s hassles trying to get a visa to enter America.
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.
When "Theme From Shaft" won an Oscar, Isaac Hayes became the first African American to win in the "Best Song" category.
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.
The stories behind "Whole Of The Moon" and "Red Army Blues," and why rock music has "outlived its era of innovation."
Surprise exits, a catfight and some very memorable performances make our list of the most memorable Idol moments.
Evelyn McDonnell, editor of the book Women Who Rock, on why the Supremes are just as important as Bob Dylan.
With Bernie Taupin, Martin co-wrote the #1 hits "We Built This City" and "These Dreams." After writing the Pretty Woman song for Go West, he had his own hit with "In the House of Stone and Light."
Danny played guitar on Sweet Baby James, Tapestry, and Running On Empty. He also co-wrote many hit songs, including "Dirty Laundry," "Sunset Grill" and "Tender Is The Night."
Taylor talks about "The Machine" - the hits, the videos and Clive Davis.
