One of the first successful female singer-songwriters, Janis had her first hit in 1967 at age 15.
Despite appearances on Carson, Leno and a Pennebaker film, Williams remains a hidden treasure.
Famous songs that lent their titles - and in some cases storylines - to movies.
These overtly religious songs crossed over to the pop charts, despite resistance from fans, and in many cases, churches.
Since his debut single "I'm On Fire" in 1975, Dwight has been providing Spinal-Tap moments and misadventure.
Did Marvin try out with the Detroit Lions? Did he fake crazy to get out of military service? And what about the cross-dressing?