Dear Karim and OpenMusic developers,
I would like to report a MusicXML import issue which I have confirmed in both OpenMusic 7.7 and OpenMusic 8.0 with MacOS 26.5 on MacBook Pro 2025 with M4.
secondasinfonia20260604-52.musicxml (161.6 KB)
I updated to OpenMusic 8.0, released on March 30, 2026, and tested the same MusicXML file again. Unfortunately, the issue remains unchanged.
The MusicXML file was exported from Sibelius and contains quarter-tone accidentals. When imported into OpenMusic as a poly/voice object, the pitches are rounded to semitone values.
I checked the MusicXML file directly. The quarter-tone information is present in the file, but it appears in the element rather than in the element. For example:
C 0 5 quarter-sharpand:
A 1 4 three-quarters-sharpIn OpenMusic, these notes are imported respectively as C natural and A sharp, without the additional 50-cent offset.
It seems that the MusicXML importer reads the value but does not take microtonal values such as quarter-sharp and three-quarters-sharp into account.
Expected behavior:
OpenMusic should preserve quarter-tone accidentals from MusicXML, for example:
- quarter-sharp: +50 cents relative to natural
- three-quarters-sharp: +50 cents relative to sharp
- quarter-flat: -50 cents relative to natural
- three-quarters-flat: -50 cents relative to flat
Actual behavior:
The imported poly/voice object contains pitches rounded to semitone values.
I also previously reported an issue concerning ties in MusicXML import. Since OM 8.0 was released on March 30, I assume that this previous report has probably not yet been reflected in the current release.
I attach a relevant MusicXML file exported from Sibelius. Please let me know if a smaller minimal test file would be more useful.
Best regards,
Takuya Imahori