`partsToVoices()`

[mrhg...@gmail.com]

Hi all,

Is anyone getting strange behaviour on the interaction of `partsToVoices()` with musescore?

`s.show("T")` reveals that all the notes there in voice 0 and 1, but open up in MuseScore and it's alto only.

Minimal case for replication:

```

s = corpus.parse("bach/bwv66.6").partsToVoices()

```

Might MuseScore be objecting to voice numbering from index 0?

Thanks for any brilliant insights!