Some nice samples for Oboe, Clarinet, and Bassoon here

[atanguay Profile]

This site has some nice samples that instruments might be able to be made from-

https://ccrma.stanford.edu/~jmccarty/formant.htm

I'm not completely sure how to get them to loop properly and behave, but they sound clear and are one note.
Might be worth a shot.

A