My browser / operating system dectected a strange glitch: there is a bassoon but no oboe. Maybe the Russians hacked this website. Or the guy who wrote Trittico.

I'm pretty sure that's not a bug/glitch. Not all instruments are included due to trying to keep the size of the app reasonable. If you would like to make a suggestion that it be added, I can move this over to the Suggestions area - or, you can start a new topic over there.