I was a self taught guitar and harmonica player, who didn't know any musical theory and rarely played chords. I wanted to learn an instrument from scratch so that I wouldn't have to unlearn bad habits. I chose the bass guitar and enrolled on a course at Goldsmith College. Your dad was my teacher. He was a nice man and a very good teacher who taught me everything I know when it comes to bass playing (I never place my thumb on the pickup). He also introduced me to James Jamerson and Jaco Pistorius. I might be wrong but I think his book hadn't been out long. I still have it and I have used it to teach others how to play. Sorry to hear about his passing. All the best. Ian Tyson