KotoViewer is a program that displays music scores in koto notation (Ikuta School) or shamisen (sangen) notation. Although most of the conversion is done automatically, users can control the process through a procedure called score annotation, by adding conversion indications (e.g., for instrument tuning) into the input files.
KotoViewer reads Western-music notation scores in MusicXML format, for instance created by MuseScore. An example of such a score, Sakura Sakura, is shown below as displayed in MuseScore and KotoViewer, both for koto and sangen. Another screenshot shows the first page of the piece called Haru no umi (Spring Sea). The Pitch Analysis Dialog, which assists users for koto tuning decisions, is also presented.
MuseScore is a free music composition and notation software, which can be used not only to input music notation, but also to import other file formats such as MIDI or even PDF. To make it easier to use KotoViewer from MuseScore, I created a MuseScore plugin so that the currently opened score in MuseScore can be displayed in KotoViewer without any other actions required from the user. For more information, check out the plugin page on the MuseScore website.