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.
Jim talks about the impact of "The Middle" and uses a tree metaphor to describe his songwriting philosophy.
Just like Darrin was replaced on Bewitched, groups have swapped out original members, hoping we wouldn't notice.
Kooper produced Lynyrd Skynyrd, played with Dylan and the Stones, and formed BS&T.
One of rock's top photographers talks about artistry in photography, raising funds for a documentary, and enjoying a County Fair with Tom Waits.
The head of Drake's estate shares his insights on the late folk singer's life and music.