Lately I’ve been creating my own resources to use with students and others who may be looking for materials. As of now this has been limited to fingering charts for the altissimo register (for soprano, alto, tenor, and baritone), but I’m going to expand it to include quarter-tone fingering charts, overtone exercises, fingering exercises, etc.
Please let me know if anyone is interested in these materials. I’ll make them available to anyone who may benefit from them.
BRIAN KAUTH 