B4. Cooper, L. Hugh. "Bassoon Clinic Series, Part Four," Etude: the Music Magazine 47/6 (June 1949): 356.

   (Eb)
x x o | x x o F
c      Bb

B4. Edwards, Artemus. In Klimko, Ronald. Bassoon Performance Practices and Teaching in the United States and Canada. Idaho: University of Idaho, 1974, p. 64.

    Eb
x x o | x o o F
 c

B4. de Gomar, Juan. In Apfelstadt, Marc and Klimko, Ronald. Bassoon Performance Practice, Teaching Materials, Techniques and Methods. Idaho: University of Idaho, 1993, p. 55. Groeling, Charles R. "Cultivating Bassoonists." The Instrumentalist 47/1 (August 1992): 52. Cooper p. 305.

    Eb
x x o | x x o F
 c

B4. Hardisty, Donald M. "Tuning those Bassoons: Part II--Tuning Individual Notes and Registers." The Instrumentalist 36/8 (March 1982): 72. Cooper p. 304.

    Eb
x x o | x x o F
 c     Bb

B4. Moritz, Frederick. "A Dissertation on the Use of Alternate Fingerings for Some of the High Register Notes on the Heckel and Heckel-Type Bassoons." The Double Reed 8/3 (Winter 1985): 28, 30.

    Eb
x x o | x x
c

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

x x o | x o o F
 c

B4. Swanson, Robert. "Pictorial Bassoon Fingerings." Woodwind Magazine 4/2 (September 1951): 7. Same as Cooper p. 305 except R. H. B hole optional.

    Eb
x x o |(x)x o F
c

Same as Cooper p. 304 except R. H. B hole optional.

    Eb
x x o |(x)x o F
c      Bb

Same as Cooper p. 312.

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

Heckel-system bassoon fingerings by note name