Bb3-C4. Christlieb, Don. Pictoral Fingerings for Bassoon. Published by author, 1966, p. 23. Price, Ross. In Apfelstadt, Marc and Klimko, Ronald. Bassoon Performance Practice, Teaching Materials, Techniques and Methods. Idaho: University of Idaho, 1993, p. 69. Timm, Everett LeRoy. The Woodwinds; Performance and Instructional Techniques. Boston: Allyn and Bacon, 1964, p. 174. Same as Cooper p. 147, bottom page, 2nd to last trill: trill L. H. C hole.

x x tr | x x o
        Bb

Bb3-C4. Christlieb, Don. Pictoral Fingerings for Bassoon. Published by author, 1966, pp. 23-25. Timm, Everett LeRoy. The Woodwinds; Performance and Instructional Techniques. Boston: Allyn and Bacon, 1964, p. 174.

             Bb-tr
x x x | tr tr o

x x x | tr tr o
       Bb

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

Bb3-C4. Timm, Everett LeRoy. The Woodwinds; Performance and Instructional Techniques. Boston: Allyn and Bacon, 1964, p. 174.

            Bb
x x x | tr x o

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