A4-B4 (downtrill). Carroll, David. In Klimko, Ronald. Bassoon Performance Practices and Teaching in the United States and Canada. Idaho: University of Idaho, 1974, p. 64.

A4 start:       B4 trill:        A4 trill: 
    Eb              Eb               Eb
x x x | o o x   x o o | o o x    x x x | o o x
 a c#            c       E        c       E

A4-B4. Christlieb, Don. Pictoral Fingerings for Bassoon. Published by author, 1966, p. 29.

Start with normal A than alternate c-hole tr and a-hole trill:

     Eb
x x tr | o tr x
 a           F#

Alternate C-hole trill and G-key trill:

x x tr | o o tr F
 a

A4-B4. Corey, Gerald. To the World's Bassoonists 4/2 (1974[75]): 4.

A4-B4:
     Eb
x x tr | x x tr Ab
 a c#   Bb

G4 termination of above trill:

    Eb
/ x x | o o o Ab
  (w)

A4-B4. Echols, Gary. In Apfelstadt, Marc and Klimko, Ronald. Bassoon Performance Practice, Teaching Materials, Techniques and Methods. Idaho: University of Idaho, 1993, p. 58.

x x tr | o x tr
 c        E

A4-B4. Ewell, Terry B. (20 August 1994). This trill is difficult for those with shorter thumbs since three keys must be engaged by the L. H. thumb. (The trill may work, however, without the c key.)

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

Those with shorter thumbs should try:

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

A4-B4. Ewell, Terry B. (20 Dec 1994). From Klif Hodgkin?

      Eb
x tr tr | o o x Ab
  a c#   Bb

A4-B4 (downtrill). Holland, Patricia. (17 September 1996).

"Slur from your regular A4 fingering to B4":

    Eb
x o o | tr tr x Ab
 c     Bb

A4-B4. Leep, Jeff. In Klimko, Ronald. Bassoon Performance Practices and Teaching in the United States and Canada. Idaho: University of Idaho, 1974, p. 67.

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

A4-B4. McAuliffe, Joseph. In Apfelstadt, Marc and Klimko, Ronald. Bassoon Performance Practice, Teaching Materials, Techniques and Methods. Idaho: University of Idaho, 1993, p. 64.

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

A4-B4. Rechtman, Mordechai. The Double Reed 6/1 (Spring 1983): 9.

     Eb
x x tr | o tr x
 a c#   Bb

A4-B4. Rusch, Richard. In Klimko, Ronald. Bassoon Performance Practices and Teaching in the United States and Canada. Idaho: University of Idaho, 1974, p. 71. "It may require a `push' for the B."

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

A4-B4. Scheller, Stanley. In Klimko, Ronald. Bassoon Performance Practices and Teaching in the United States and Canada. Idaho: University of Idaho, 1974, p. 69.

x x tr | o x o
 a c#

A4-B4 (downtrill). Schoenbach, Sol. In Klimko, Ronald. Bassoon Performance Practices and Teaching in the United States and Canada. Idaho: University of Idaho, 1974, p. 68.

A4 start:         B4 trill:         A4 trill:
x x x | x x x F   x o o | x x x F   x x x | x x x F
 a c#    E         c       E         c       E

A4-B4. Timm, Everett LeRoy. The Woodwinds; Performance and Instructional Techniques. Boston: Allyn and Bacon, 1964, p. 177.

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

     Eb
x x tr | x x tr F
 a        E-tr

"Fingers do not trill together. Left hand down while right is up":

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

"Fingers do not trill together. Left hand down while right is up":

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

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