Stravinsky, Igor. Octet, opening, Ab4-Bb4. Barris, Robert (25 May 1995).
Ab4: Ab4-Bb4 (downtrill): x x x | o o o F x x x | o o G-tr F-tr a c# Bb a c# Bb
Stravinsky, Igor. Octet, opening, Ab4-Bb4. Cooper, L. Hugh. The Double Reed 1/2 (October 1978): 1
3.
Ab4-Bb4: Eb x x tr | o x o F a c# Bb
Stravinsky, Igor. Octet, opening, Ab4-Bb4. Corey, Gerald (25 May 1995).
Ab4-Bb4, trill all together:
c#-tr 4/5 x x | o x x d-tr c-tr
Stravinsky, Igor. Octet, opening, Ab4-Bb4. Corey, Gerald (Feb. 1999).
For Bb4 add all trill keys together:
c#-tr 4/5 x x | o x x c-tr a-tr Bb-tr
Stravinsky, Igor. Octet, opening, Ab4-Bb4. Grossman, Arthur (25 May 1995). Ab4-Bb4 (downtrill):
x x x | o x o F a c# Bb-tr
Stravinsky, Igor. Octet, opening, Ab4-Bb4. Harris, Truman.
Eb F# x x tr | tr tr x a c# Bb
Stravinsky, Igor. Octet, opening, Ab4-Bb4. Lacy, Ed (25 May 1995).
Ab4 Ab4-Bb4 (downtrill): / x x | o x x x x x | o tr x w Bb Bb
Stravinsky, Igor. Octet, opening, Ab4-Bb4, first bassoon. Rechtman, Mordechai. To the World's Bassoonists 5/1 (1975): 5. L. H.: thumb C# and A; cover E, D, and C holes; Eb key. R. H.: thumb Bb; cover A hole; F key. Trill R. H. thumb Bb key.
Ab4-Bb4: Eb x x x | o x o F a c# Bb-tr
Stravinsky, Igor. Octet, opening, Ab4-Bb4. Schoenbach, Sol. To the World's Bassoonists 5/1 (1975): 5. Trill R. H. G and F keys together.
Ab4-Bb4: x x x | x x tr F-tr a c# Bb
Heckel-System (German) Bassoon Trills and Shakes by Note Names