Well, I don't have any formulas, but I for one loves to dabble with strange odd meters, 12 tone music and music that goes beyond the traditional western tonal scale:
Here's one example, from my drone/ambient/noise project, called Dør#3, or just Dør, as it is called on my new digital released album, on which it is the tittle track:
Also this track, RBG (an examination in chromesthesia), or just RBG, also with my drone/ambient/noise project, isn't build up on traditional music theories on notes and harmonies, but is instead build up using a higher and lower frequency of the 3 basic colors transformed into the audible spectrum using a sinus wave generator (kind of my own half baked pseudo scientific emulation of chromesthesia):
Here's the theory behind it:
An examination in chromesthesia:
The wavelengths of the 3 primary colors our optic nerves can perceive has been transformed to sound within the audible spectrum through a sinus wave generator.
A higher and a lower pitch for each of the 3 colors has been arranged into this musical piece.
Red: (0.000000700 x 12^8) + (0.000000700 x 10^8)
Blue: (0.000000470 x 12^8) + (0.000000470 x 10^8)
Green: (0.000000530 x 12^8) + (0.000000530 x 10^8)