Thanks, Jon. I'm pretty shakey on mode recognition myself. But when a tune has a single F# as a key signature (key of G major) but the melody always resolves on a D, I figure it's Dmix even without trying to sing or play the tune. Of course a musician sight reading the lead sheet probably wouldn't care, they'd just think of it as one sharp and let it go at that. But perhaps programs like Neil Jennings' HARMONY would generate different chords and harmonies for Dmix and Gmaj.

Susan, I'm no expert on copyright but I think anything copyrighted in 1867 is now safely in the public domain. That doesn't mean that more recent dirivative works aren't protected but the original work has surely passed all copyright expiration criteria.

      - Mark