You can't talk about how good they were as musicians without referring to the combolins. The story in the programmes - and its probably not too much of an exaggeration! - was that they designed these instruments and prepared the advertisements for next years tour featuring the instruments before they were completed. When the instruments were finished - they sounded dreadful. Emergency redesign was undertaken. As a result, they only had a few months to learn how to play them before the tour started!Both are/will be missed, but its a retirement well earned. Enjoy it, Ronnie.