[observation, 1973] As opposed to the 1930s or '40s, when song- writers like Gershwin and Kern and Rodgers and Arlen were using harmonics, I actually think we've retrogressed. Those days were much richer musically. Remember how the word 'lush' was applied to our popular music? One of the things that I've said to my own son Casey, who's seventeen and very much into this hard-rock thing, is 'I listen to it, but I get no surprises'. They'll keep on doing variations on one chord, but that's the same chord all the way through.