B3-C#4. Elliot, Thomas C. In Klimko, Ronald. Bassoon Performance Practices and Teaching in the United States and Canada. Idaho: University of Idaho, 1974, p. 65.

x x x | x o tr F-tr
   c#  Bb-tr 
   D

B3-C#4. Jewell, E. Harvey. In Klimko, Ronald. Bassoon Performance Practices and Teaching in the United States and Canada. Idaho: University of Idaho, 1974, p. 66. Timm, Everett LeRoy. The Woodwinds; Performance and Instructional Techniques. Boston: Allyn and Bacon, 1964, p. 174. Same as B3-C#4 trill on Cooper p. 156.

x x tr | x

B3-C#4. McIntyre, Richard. In Apfelstadt, Marc and Klimko, Ronald. Bassoon Performance Practice, Teaching Materials, Techniques and Methods. Idaho: University of Idaho, 1993, p. 65.

x x x | x o o
   c#-tr

B3-C#4 (downtrill). Millard, Christopher. In Klimko, Ronald. Bassoon Performance Practices and Teaching in the United States and Canada. Idaho: University of Idaho, 1974, p. 67.

x x x | x x tr F
   c#  Bb

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