There are no more rock stars - the last one died in 1994.
A renowned guitarist and rock revivalist, Dave took "I Hear You Knocking" to the top of the UK charts and was the first to record Elvis Costello's "Girls Talk."
A song he wrote and recorded from "sheer spiritual inspiration," Allen's didn't think "Southern Nights" had hit potential until Glen Campbell took it to #1 two years later.
After studying in Paris with a famous composition teacher, Charles became the most successful writer of TV theme songs.
Just how much did these monsters of rock dabble in the occult?
The stories behind "Whole Of The Moon" and "Red Army Blues," and why rock music has "outlived its era of innovation."