n the wangga song $$Ibis $($Ibij$),$ the digeridoo player achieves timbral diversity by

manipulating the relationship between fundamental pitch and its harmonics

changing the instrumentation.

singing multiple tones at the same time.

adjusting the dynamic range.n the wangga song $$Ibis $($Ibij$),$ the digeridoo player achieves timbral diversity by

manipulating the relationship between fundamental pitch and its harmonics

changing the instrumentation.

singing multiple tones at the same time.

adjusting the dynamic range.