G4-Ab4 (downtrill). Jolivet, Michel. The Double Reed 10/3 (Winter 1987): 23.

Start:             Ab4:              G4-Ab4 trill:
o x x | o o o      o x x | o o o     o x x | tr o o
d                  d  c#             d  c#

G4-Ab4. Seltmann, Werner and Angerhöfer, Günter. Fagott-Schule in sechs Bänder, vol. 6 (Mainz: Schott), p.144. Permission granted for inclusion in this WWW index by Deutcher Verlag für Musik.

 o  x  x  | o(x)(x)
(d-tr) c#-tr

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Contrabassoon (German system) trills and shakes by note names