Since emerging from MySpace with her hit "Bubbly," Colbie has become a top songwriter, even crafting a hit with Taylor Swift.
The "All I Want" singer went through a long depression, playing some shows when he didn't want to be alive.
The Christian rapper talks about where his trip to Haiti and his history of addiction fit into his songs.
After studying in Paris with a famous composition teacher, Charles became the most successful writer of TV theme songs.
Despite appearances on Carson, Leno and a Pennebaker film, Williams remains a hidden treasure.
The Scorpions and UFO guitarist is also a very prolific songwriter - he explains how he writes with his various groups, and why he was so keen to get out of Germany and into England.