The Key to Tenor Clef (method and duets) - 2BSN

The Key to Tenor Clef
for two bassoons
by Gilbert Hirtz

This collection of pieces gradually introduces the tenor clef note by note. There are LOTS of duets that increase in difficulty, and introduce the concept of tenor clef much earlier than one would normally expect. Overall, an excellent book. The duets are in score form and meant to be read from the book - there are no individual parts.