I Started off by selecting tetrachord 4-1 and 4-21 because of the relationship of their ic vecs (which was 321000 and 030201 respectively) i liked how on one the zeros and the other numbers were separated, while on the other the zeros separate the numbers. In seeing that this was the chromatic and whole tone scale, i immediately noticed a doubling pattern. This inspired me to extract a rhythmic idea from the pc’s. I decided on a whole note, followed by two half notes, followed by three quarter note triplets. I then created an isorhythm with this by triggering a sequencer that cycled through the set according to the rhythmic values i stated earlier, which resulted in an in-phase isorhythm, where it looped the rhythm with the set. I then disrupted this by changing the rhythmic values by either doubling them or dividing them by two. This idea progresses from the original whole tone set, to the chromatic, half-tone set, which plays for the most part twice as fast. Once the chromatic set is left playing alone for some time, the whole tone set returns at on average half the speed it was at the start, and the piece ends by slowly divining the rhythms so the spiraling effect of the isorhythms becomes aparantant.
12 Tone Drone
Visualization of Binaural effect: