G4-A4. Christlieb, Don. Pictoral Fingerings for Bassoon. Published by author, 1966, p. 27.

o  x  x  | x o o F
a-tr c#-tr

        Eb
 o  x  x  | x o o F
c-tr a-tr

o x x | o o tr Ab
 a-tr

    Eb
o x x | o o tr
              Ab

G4-A4. Houser, Roy. In Klimko, Ronald. Bassoon Performance Practices and Teaching in the United States and Canada. Idaho: University of Idaho, 1974, p. 64. Same as first G4-A4 trill on Cooper p. 244 except no L. H. Eb key.

 /  x  x  | x o o F
 a-tr c#-tr

G4-A4. Timm, Everett LeRoy. The Woodwinds; Performance and Instructional Techniques. Boston: Allyn and Bacon, 1964, p. 176.

    Eb c#-tr 
/ x x | o o tr Ab

    Eb
/ x x | o o tr Ab

       Eb
/  x  x  | x o o F
a-tr c#-tr Bb-tr

Downtrill:

      Eb
x tr tr | o o x
  a c#

G4-A4. Winstead, Willaim. In Klimko, Ronald. Bassoon Performance Practices and Teaching in the United States and Canada. Idaho: University of Idaho, 1974, p. 70.

    Eb c#-tr
/ x x | o o tr Ab

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