She thinks of herself as a "song interpreter," but back in the '80s another country star convinced Emmylou to take a crack at songwriting.
Since emerging from MySpace with her hit "Bubbly," Colbie has become a top songwriter, even crafting a hit with Taylor Swift.
At 80 years old, Yoko has 10 #1 Dance hits. She discusses some of her songs and explains what inspired John Lennon's return to music in 1980.
There are no more rock stars - the last one died in 1994.
Kooper produced Lynyrd Skynyrd, played with Dylan and the Stones, and formed BS&T.
Tom talks about the evolution of Cinderella's songs through their first three albums, and how he writes as a solo artist.