Claude 1b2ba01055 feat(theory): twelve-tone serialism — ToneRow + row matrix ...

Add a top-level ToneRow class for the twelve-tone technique:

- validates a row is a true permutation of all 12 pitch classes
- the four operations P/I/R/RI, each beginning on the pitch class asked
  for; form("RI7") lookup; all_forms() (all 48)
- the 12x12 row matrix() and a labelled, aligned matrix_str()
- is_all_interval / interval_succession

Documentation-forward (the maintainer was new to the topic): a teaching
guide page docs/guide/serialism.rst that explains the technique plainly
and shows the self-verifying matrix invariants, plus a scales-and-tunings
skill section. 13 tests assert those invariants (every row/column a
permutation, diagonal all zeros).

Third of four theory features.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014ijpMiuST8kXnBoB5pSu8t

2026-06-17 01:53:49 +00:00

..

SKILL.md

feat(theory): twelve-tone serialism — ToneRow + row matrix

2026-06-17 01:53:49 +00:00