Sinfonia Shaping Up Nice! Or, Explorations of Hexachords

I am just so stoked about how my new orchestral Sinfonia is shaping up! I got a lot of fascinating work done on it today…

Long story short… I developed an intro theme and then broke that apart to find it was built upon 6 distinct notes (not counting a couple “passing tones”). Then I said to myself, since I have a hexachord here, what would its complement be? Thus, I notated out my second hexachord, creating a full 12-tone-row between them.