Athematic: perpetual development

1. enlist FIRST phrase: one entry
   

   An entry:

   • is one of the sources: orig, cancer, mirror, table, suitably transposed
   • 12 notes precisely
   • each such entry has a unique ID

2. ADD: add a entry to phrase

   • set place to add and transpo, such that first note is harmonic
   • add in first available voice
   • specify as comment ( besides the pitch ):
     • ID
     • index
   • must be harmonic. If not,

     1. add a general pause in phrase
     2. put the nonharmonic tone in first voice
     3. FOLD-VS-EXTEND: try to fold, NOT EXTEND, as much as possible

   • try to extend as much as possible
   • try to fold as much as possible

     extend and fold may conflict (see FOLD-VS-EXTEND above); if a general pause is needed for harmony, it makes no sense to fold

   • prevent parallel voices

     when a voice enters on index 0, the index 0 may not appear elsewhere in the same chord

3. enlist the following:
   • phrase
   • (with probability 30%) phrase with duplicate chords/general pauses inserted
   • (with probability 70%) subset of phrase containing newest voice

4. standardize enlisted phrases:
   • delete general pause at the beginning and the end
   • at most 3 identical chords

     This may blend voices, if the same pitch originates in distinct voices, but the chords come out the same, and some get deleted. The end result is a voice containing less than 12 pitches, while the series, in all voices, are complete.

5. pick phrase from list and repeat from ADD