I had my musical world opened wide by David when he was the
ultimate all-night radio DJ on CHUM-FM in the late
60s, before there were formats other than what the DJ created. David left CHUM, after the evolving rules began to constrict him, to become program director for CFNY-FM
to establish it as a cutting edge station. He was a man of principles who never compromised and also left CFNY when enforced changes appeared, refusing to, as he put it, turn the station into a conduit for "shallow hit-oriented Pabulum".
I took a course with him in the History of Rock Music at the Learning Annex, and we became friends. He was actually a pretty straight cat, which surprised me. Having said that, he was an eclectic forward thinker and a man of considerable depth. This scoped air-check was broadcast on Q 107, in its heyday. David was a great radio man and is sorely missed.