Jacob, Gordon. Concerto for Bassoon and Strings, second movement. Ewell, Terry B. (20 August 1994). Measure 1, for Db5 use Cooper p. 331. For the C5 grace-note to Db5 grace alternate:

Db5:                    C5 grace-note:
     Eb                      Eb
 x o x | x o x           x o o | x o o
d c                     d c

Jacob, Gordon. Concerto for Bassoon and Strings, second movement. Thornburg, Joe (21 Feb. 1995). Measure 1, for Db5 use Cooper p. 331. For C5 grace note add R. H. Bb key.

Db5:                    C5 grace-note:
     Eb                      Eb
 x o x | x o x           x o x | x o x
d c                     d c     Bb

Suggested Heckel bassoon fingerings for musical passages