Honestly, if he did die, we WOULD hear something about it. Rest assured he was on 60 minutes a few months ago speaking out against the horrible things they've been doing with Sesame Street songs (that's as far as I will go).
Like what? I don't really watch
60 Minutes, but I'm interested in hearing what he's talking about.
But again, yeah, I guess with other original SS musical greats like Joe Raposo having passed and all, I guess I was under the impression that Chris Cerf was as well... that last I saw of him was a brief appearance in a featurette on
The Cat in the Hat DVD (Mike Myers version) about "the real" Theodore Giesel, otherwise known to the world as Dr. Seuss... and that was a good few years ago.