John Luther Adams writes in with a note about using gamuts in composition:
The use of gamuts is among the most practically useful aspects of our inheritance from Cage.
When we freeze the tonal space, we shift the focus of our music away from the manipulation of notes to listening to the sounds. It doesn’t matter whether the elements of a particular gamut are obviously related at the outset. When we hear the music, we hear the continuity, the continuum of the sounds. The use of interval controls (a la Harrison) does something similar. In fact, I often use interval controls to create my gamuts. So Lou’s observation to Daniel Wolf [see comments] makes good sense to me.