this was on rec.music.classical.recordings

[neil@thump.org (Neil)]

Now YOU can hum along to Glenn Gould's classic recordings.

Most vocal removing processors simply aren't designed to handle the
frequencies in Glenn Gould's vocals. The GG-DV2000 Glenn Gould De-Vocalizer
2000 is optimized to remove only the humming and singing of Glenn Gould and
leave the piano sound intact. No special CD's are needed. Just try that with
any old vocal processor!

Now you can listen to Glenn Gould recordings without the extraneous humming
and singing OR add your own with the included microphone. Great for dinner
parties!!!

Check out: http://www.unpronounceable.com/gould/
for more information, pricing and 'before and after' samples.