G#3-A3. 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.

x x x | x x x Ab
       Bb-tr

G#3-A3. Timm, Everett LeRoy. The Woodwinds; Performance and Instructional Techniques. Boston: Allyn and Bacon, 1964, p. 173.

/ x tr | x x x Ab
  (w)

x x x | x x tr Ab

x x x | x x tr Ab-tr

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