B4. Standard. Corey, Gerald. "How to Make the French Bassoon `Work.'" The Journal of the International Double Reed Society 1 (May 1973): 39. Also see Allard, Maurice. Le Basson: Methode de basson (Paris: Gèrard Billaudot, 1975), p. 12.
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B4. Corey, Gerald. "How to Make the French Bassoon `Work.'" The Journal of the International Double Reed Society 1 (May 1973): 39. "Possible, but not as secure."
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B4. James, Cecil. Unpublished chart.
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