Balloon Drum Music Take 2

I’ve been working on some python code to explore the tonality diamond to the 31-limit. This piece is one of the first to result in some “music”. It’s derived from a set of chord changes based on the 15-limit diamond. It starts out with a vamp on the otonality of 16/9, then proceeds to a bridge made up of nine chords:

# mode root rank inversion
bridge_keys = np.array([["oton","16/9","A", 1],
["oton", "8/7", "A", 3],
["uton", "9/8", "A", 3],
["oton", "16/15", "A", 4],
["uton", "1/1", "A", 2],
["oton", "1/1", "A", 1],
["uton", "7/4", "A", 4],
["uton", "15/8", "A", 4],
["oton","16/9","A", 3]])

I divide the 31-limit diamond up into what I call “ranks”. Rank “A” in the otonality is 8,10,12,14/8. Rank “B” is 9,11,13,15. I’ll get to the other ranks after I am more comfortable with the tools I’m using these days. Instead of using my old standby Pascal code to translate text into Csound, I’ve written a collection of python functions, dictionaries, and data structures. It’s a pretty steep learning curve. But I think there is potential here. Take a listen.