Four States for Bass Trombone is a work for bass trombone and live electronics in (at the time of writing) four movements, commissioned by and premiered by Dr. Paul Wilson.
It takes as its inspiration geological states and processes and interprets these through the wide variety of sonorities possible with the bass trombone.
These sonorities and then extrapolated further through the means of computer processing.
I. Striate
II. Exsiccate
III. Fissure
IV. Glaciate