On the "schizoid element" of his lyrics, and a famous line from "Everything Zen."
Doubt led to drive for Francis, who still isn't sure why one of Status Quo's biggest hits is so beloved.
Franti tells the story behind his hit "Say Hey (I Love You)" and explains why yoga is an integral part of his lifestyle and his Soulshine tour.
A selection of songs made to be terrible - some clearly achieved that goal.
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.
Martyn talks about producing Tina Turner, some Heaven 17 hits, and his work with the British Electric Foundation.