C6. Van Hoesen, K. David. In Klimko, Ronald. Bassoon Performance Practices and Teaching in the United States and Canada. Idaho: University of Idaho, 1974, p. 68.
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C6. Leep, Jeff. In Klimko, Ronald. Bassoon Performance Practices and Teaching in the United States and Canada. Idaho: University of Idaho, 1974, p. 67. May need teeth on the reed.
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C6. Rechtman, Mordechai. The Double Reed 2/1 (April 1979): 12. "To be played with a hard reed (thin lip)."
x o x | x x o F a Bb