A#3-B3. Christlieb, Don. Pictoral Fingerings for Bassoon. Published by author, 1966, p. 23. Timm, Everett LeRoy. The Woodwinds; Performance and Instructional Techniques. Boston: Allyn and Bacon, 1964, p. 173.

            Bb-tr
x x x | x tr o

A#3-B3. Timm, Everett LeRoy. The Woodwinds; Performance and Instructional Techniques. Boston: Allyn and Bacon, 1964, p. 173.

            Bb
x x x | x tr o

Heckel-System (German) Bassoon Trills and Shakes by Note Names