Related question for someone like MTed. Why is it that we chose our scales and divided them up in the various ways we did? Also, how much of what we find musical is simly determined by our ears growing up with our scales? I can see the ocatave in terms of doubling a frequency but why divide by 8 (or 12)... It is a subject that is starting to interest me - any info or recommendations of sites which explain the maths behind it? - I know how to do 12TET but that is my limit.

Jon