D3-Eb3. Ewell, Terry B. (April 28 1995). Sources unknown.
x x o | o o o c#-tr w-lock (D-tr) tr x o | o o o w o x x | o o o c#-tr w-lock eb-tr x x o | o o o w F#
Heckel-System (German) Bassoon Trills and Shakes by Note Names