When I approach structures that are not tonal or modal in convention, I usually pick something simple to work from. The last improvisation used a set and the theoretical model of the harmonic series. This improvisation is a simple movement from one pitch center to another: C# to Eb. But it is far more complex with the organ in terms of orchestration. The addition of mutation stops convolutes the pitch material; something I tried to manipulate as the improvisation went along. There is also some rhythmic-“Rite-of-Spring” type of pulsing. A terrible admittance: if you listen closely, you can hear the spring action of the organ ever-so-slightly in the background.