In short, yes, such things exist, though not in Lilypond. I am a computational musicologist that collaborates in developing tools for analysing counterpoint. We've got tools like this to use in Humdrum or Music21. I think the Lilypond implementation would not be trivial (as Urs says), but I'll talk to one of my colleagues who is a much better programmer and see what he says.
On Tue, Nov 8, 2016 at 9:57 AM, Urs Liska <u...@openlilylib.org> wrote: > > > Am 07.11.2016 um 13:21 schrieb bart deruyter: > > On a sidenote (perhaps for a different topic), in Musescore there is > > the possibility to create plugins which provide harmony checks, > > someone also did a plugin for a previous Musescore version which > > checked only first species counterpoint. > > > > I know lilypond's first purpose is creating sheet music, not composing > > music, but are there snippets of scheme or libraries around which > > could do the same? > > > > I think, for people who study counterpoint and voice leading, or any > > other rule-set in music, it would be very interesting to have a an > > option to check if they've followed the rules. In my case I have no > > teacher, can't afford private lessons, so I have to figure it out on > > my own without any way to check if I'm actually correct in > > interpreting the rules and executing the exercises. > > > > I don't know if any code for this or similar purposes is already around > (I suspect not, otherwise you'd have got a reply), but I think from the > organizational POV it should be pretty easy to write something like > that. Basically it would work similar to the part combiner: take two (or > more) music expressions, perform the calculation and produce some > output. I don't immediately see how the actual content checks would have > to be implemented, but the infrastructure should be striaghtforward. > > I can see different ways to approach it: one could have a function that > simply performs the checks and prints out the results to the console, or > it could actually modify the music expressions in a way that the results > are printed directly in the score (e.g. coloring or other visible hints). > In a similar way one could also write functions for harmonic analysis. > > Probably the actual implementation is not all that trivial, and I > wouldn't start working on it. But I think it would make a good > openLilyLib package, and if someone is interested in the topic and has > the necessary Scheme skills I'd be happy to help with the openLilyLib > part of things. > > Urs > > _______________________________________________ > lilypond-user mailing list > lilypond-user@gnu.org > https://lists.gnu.org/mailman/listinfo/lilypond-user >
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