Fast VCOs for wavetable

[Drew Hutchison]

Seems there has been a lot of discussion on this lately.  Anyway, here's
my input:  It has been fairly well agreed that no VCO we know of can
handle running at 32-64 times the speed we normally use them with enough
stability to reference a table.  Would it be possible to run a VCO
(Stopp's?) at a normal speed and send that through a multiplier of some
form?  I know there are many circuits out which do this at MUCH higher
frequencies than audio, and they seem pretty stable.  It seems like a
phase locked loop might do it.  Any thoughts?