D5. Allard, Maurice. In Corey, Gerald. "How to Make the French Bassoon `Work.'" The Journal of the International Double Reed Society 1 (May 1973): 39.
"Strongest":
o o o | o o o Eb F#
For pianissimo. Cover lower portion of the half-hole not the side:
o / o | o o o Eb F#
D5. Allard, Maurice. Le Basson: Methode de basson (Paris: Gèrard Billaudot, 1975), p. 29. For ascent to Eb5.
C# o o o | o o Bb o d F#
D5. James, Cecil. Unpublished chart.
o o o | o o Bb o d or c o o x | o o x F d or c
D5. Robert, Henri. In Corey, Gerald. "How to Make the French Bassoon `Work.'" The Journal of the International Double Reed Society 1 (May 1973): 39.
"Excellent, also for slurs (liaisons)":
o o o | o o x Ab d