Finger Technique and Fingering Charts for Bassoonists only....
The Half Hole Technique One of most tricky key mechanics of the bassoon is the half hole (where you are literally covering only half of the hole with your finger). You would use this fingering in the upper range of the instrument and when playing G. When playing make a slight rocking motion of the first finger to half hole. It is very important to not use your wrists to rock your finger!
Flicking “Flicking” involves the left thumb momentarily pressing, or “flicking” the high A, C and D keys at the beginning of certain notes in the middle octave. This technique eliminates cracking of notes.
Db / C# Fingering The fingering for this note is very tricky, particularly with players with smaller hands. The mid range Db requires you to depress three thumb keys at one time. The high Db requires two thumb keys. It is very important to slowly practice this fingering while being aware of tension in the hand and arm.
This fingering chart was taken from the following resource: