C+4. Bartolozzi, Bruno. New Sounds for Woodwind. London: Oxford University Press, 1971, p. 32. Vigder, Scott. "A Table of Quarter-Tone Fingerings for the Bassoon," The Double Reed 4/2 (October 1981): 44. These fingerings were extracted from Sergio Penazzi's Metodo per Fagotto (Edizoni Suvini Zerboni-Milano, 1971).
x x x | x x x F c#
C+4. Hines, Edward J. "Yeni Makam 1: New Sounds for Solo Bassoon Using Ancient Modes." The Journal of the International Double Reed Society 20 (1992): 77.
x x x | x o o c
C+4. Reinhard, Johnny. "The Microtonal Bassoon." The Double Reed 10/2 (Fall 1987): 42. Also see Klimko, Ronald. "Bassoon Music Reviews." The Double Reed 16/1 (Spring 1993): 62. Contains fingerings for Johnny Reinhard's Dune for Bassoon (1990).
x x x | o o o
Bb