About twenty years ago, Ellis Wean, now tuba player with the Vancouver
Symphony, developed a line of transparent mouthpieces called "Tru-Vu".
They are primarily used for diagnostic purposes for people who want to
look at what is going on with their embouchure. They sound OK, but I
think Ellis's idea was more to help teachers and students resolve
embouchure problems. Seems like a good idea, although I never tried one
myself...unfortunately, I didn't find a web site, although there must be
one out there somewhere.
http://www.chisham.com/tips/bbs/nov2001/messages/76627.html
http://www.vancouversymphony.ca/or_member_bio.php?musiciancode=86
Cheers,
Dan Costello
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