F4-Gb4. Timm, Everett LeRoy. The Woodwinds; Performance and Instructional Techniques. Boston: Allyn and Bacon, 1964, p. 175.

   (Eb)
x o x | x tr o 

o x x | x x o
       Bb-tr
Home page

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