Re: pitch-class sets in lilypond

[Lukas-Fabian Moser]

Hi Stefan,

Am 20.09.22 um 13:00 schrieb Stefan Thomas:

Dear community,

sorry, it's a bit an off topic: If You are not interested in pitch-class set theory, You don't have to read the following.

I've worked on a python module dealing with pitch-class set theory as I've read in "The structure of atonal music" by Allen Forte.

I know that there already exists some modules like that but I want to integrate it in lilypond.

I'm still working on this module, but at the  moment I can do:

• Getting the normal form and prime form of a pcs.
• Transposing and inverting a pcs
• Finding subsets of a pcs given in primeform.

I'm working on:

• Finding different kinds of similarity of pcs.
• Getting subcomplexes k and kh of a pcs.
• Finding primeform and so on, when pitches in lilypond-style are given.
• Getting pitches in lilypond-style when pitches in midinote-nums or as pcs are given.

Let me know it if You are interested. Maybee it's only something of interest for nerdy persons like me, but maybee for others too.

I don't know if this is of use to you, but I created a bunch of LilyPond routines for dealing with PC sets (like in Forte, but also with a finer equivalence relation not identifying a set with its inverse) last year. I attach it unchanged, as I don't have time to clean it up at the moment; you'll probably want to uncomment some of the routines at the end to see what the functions do.

I'm curious: You write that you are working on a Python module; how does this integrate in LilyPond?

Lukas

pc-sets.ly
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