A#4-B4. Houser, Roy. In Klimko, Ronald. Bassoon Performance Practices and Teaching in the United States and Canada. Idaho: University of Idaho, 1974, p. 64.
x x tr | x x tr F d Bb
A#4-B4. McAuliffe, Joseph. In Apfelstadt, Marc and Klimko, Ronald. Bassoon Performance Practice, Teaching Materials, Techniques and Methods. Idaho: University of Idaho, 1993, p. 63.
Eb x x o | x x o c Bb-tr
A#4-B4. Timm, Everett LeRoy. The Woodwinds; Performance and Instructional Techniques. Boston: Allyn and Bacon, 1964, p. 177.
Eb x x tr |(x) x o F a c# Eb x x tr | o x o a c# E Eb x x tr | o x o Ab a c#
Heckel-System (German) Bassoon Trills and Shakes by Note Names