In Q
01 February 2015 Filed in: Music | Tuning
Theory
Listen to In Q
This piece is inspired by the famous In C by Terry Riley. Italian native speakers may get the witty meaning of the title that I am not going to explain!
This piece is based on a non-octave scale I thought it was a dodecatonic subset of Carlos Gamma but only after the fact I realized I was wrong. The pseudo-octave that is the repeat ratio of this tuning system comes from Carlos Gamma being calculated as 3:2^34:20 or 1193.3235015 cents but the number of steps I chose is wrong (2,1,2,1,2,2,1,2,1,2,1,2):

Once I noticed there was no 3:2 ratio (701.955 cents) I understood there was something wrong! Then I realized how I had made this mistake.
When working with Carlos Beta I had created a dodecatonic subset based on its pseudo-octave calculated as 3:2^19:11 or 1212.4677288 cents:

The Beta subset is correct but when I transposed that subset to the Gamma pseudo-octave I should have changed the number of large and small steps.
A correct dodecatonic subset of Carlos Gamma could have been 3,3,3,2,3,3,3,3,2,3,3,3:

Anyway....I guess this piece will remain the only one composed with that tuning system and I will not bother playing this piece with the correct Gamma subset but.... maybe I will compose something else with it!