[im3w1l]

As different standards proliferate it makes me worried that we will have less interoperability not more, as programs only have limited resources and pick one format they focus on supporting and perhaps half-assing another. (How) do you plan to adress this? Are there plans for some library for dealing with these files to help adoption? What will be the best way for users to convert from MusicXML to MNX and back? Is losslessly roundtripping MusicXML an explicit goal? (I assume losslessly roundtripping MNX will not be possible in general as you intend to add new features to MNX that MusicXML doesn't have and will never have).

[adrianh]

Yes, I've already begun work on an open-source utility that converts from MusicXML to MNX: https://github.com/w3c/mnxconverter

Eventually it'll work both ways. I'm hoping this is a big help for adoption, as gives you two formats for the price of one (just write an importer for MNX, and you can get MusicXML import support "for free" if you use the library).