Bb2. Standard. Corey, Gerald. "How to Make the French Bassoon `Work.'" The Journal of the International Double Reed Society 1 (May 1973): 38. "Use most of the time--with or without the Eb key."
W x x x | x x Bb o (Eb) E
Bb2. Forked. Corey, Gerald. "How to Make the French Bassoon `Work.'" The Journal of the International Double Reed Society 1 (May 1973): 38. Also see Allard, Maurice. Le Basson: Methode de basson (Paris: Gèrard Billaudot, 1975), p. 28. "Only in extremely fast passages."
W x x x | x o x E
Bb2. James, Cecil. Unpublished chart.
W x x x | x x Bb o F# Eb
Bb2. Robert, Henri. In Corey, Gerald. "How to Make the French Bassoon `Work.'" The Journal of the International Double Reed Society 1 (May 1973): 38. For pianissimo.
W x x x | x o x D Eb