Bb clarinet

multiphonic D#4, F5, C#6 & E#6

multiphonics     C4 & A#5 D#4 & C#6 F#4, G#5, D6 & G6 D4 & B5 E4 & C5 G#4, C5, A#5 & E6 D#4, D#5 & B5 F4 & G#5   D#4, F5, C#6 & E#6 F4 & A5

Impedance

Fingering a key depressed a key not depressed a hole covered a hole uncovered a part of the mechanism that is not normally touched Details in fingering legend. Acoustic schematic a closed tone hole an open tone hole Non-specialist introduction to acoustic impedance Non-specialist introduction to clarinet acoustics Notes are the written pitch. Frequencies are the sounding frequency, for Bb clarinet. Unless otherwise stated, the impedance spectrum is for a Bb clarinet.

Here, the D#4 may be considered as produced by a variant of the E4 fingering, with cross fingering to make it flatter. The F5 may be considered as a peculiar perturbation fingering for G5, with cross fingering and a poorly placed register key. It is difficult to explain the higher notes by such simplistic means: once we are at or above the cut-off frequency, the whole bore is involved.

Sound

Sound spectrum of a Bb clarinet played using fingering for the multiphonic D#4, F5, C#6 and E#6 .
For more explanation, see Introduction to clarinet acoustics

Sound Clip

You can hear the multiphonic D#4, F5, C#6 and E#6 played.