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.
How four songs portray Shakespeare's character Ophelia.
Waters tells the "Gypsy Woman" story, shares some of her songwriting insights, and explains how Dennis Rodman ended up on one of her songs.
Chad tells tales from his time as drummer for Nirvana, and talks about his group Before Cars.
When you free your mind, your ass may follow, but you have to make sure someone else doesn't program it while it's wide open.
Switchfoot's frontman and main songwriter on what inspires the songs and how he got the freedom to say exactly what he means.