Britten, Benjamin. A Midsummer Night's Dream. Corey, Gerald. The Double Reed 1/2 (October 1978): 12. From Cooper p. 87 with no Eb key trill L. H. F# trill key, R. H. thumb Bb key, and R. H. C# trill key together.
Eb3-Gb3 (trill all keys together):
eb-tr c#-tr
x o x | o o o
Bb-trBritten, Benjamin. A Midsummer Night's Dream. Cooper, L. Hugh. The Double Reed 1/2 (October 1978): 12-13. For F3 nothing down. Trill L. H. A and C speaker keys together.
F3-Ab3:
o o o | o o o c-tr a-tr
Britten, Benjamin. A Midsummer Night's Dream. F3-Ab3. Corey, Gerald. The Double Reed 1/2 (October 1978): 12. Start F3 with L. H. little finger whisper key [or on bassoons without this use the whisper key lock--T. B. E.], R. H. cover B and A holes, G key. Trill L. H. C# and A speaker keys, 1/2 E hole, and D and C holes together.
F3-Ab3:
o o o | x x x /-tr tr tr | x x x wlock a-tr c#-tr wlock