I have just finished installing TwelveKeys and started using it in a composition of mine. Simple thing, one single instrument, just to check the features of TwelveTone, on the fly. Sadly enough, I couldn't find any option that would adress a file output of any kind. That's a major drawback for me! What good would it do to spend time working with a software that does NOT allow you to save your work? I'm starting to regret having bought it.