looking evolutionary song instance code

i exercise an interactive evolutionary algorithm generating song (probably only rudimentary melodies start with).

i'd this. the website claims fitting evolutionary music, nonetheless i can't any evolutionary examples.

i already have yield evolutonary machinery. i am looking simple, operative formula demonstrates viable approaches low-pitched biased (e.g. suitable encodings evolutionary operators grown tunes).

i have ideas competence achieved, nonetheless i'm quite associating song theory, start i'd only reimplement something famous work.

so does anybody have, know of, any plainly accessible formula (any libel fine) demonstrates some-more approaches evolutionary music?

edit: i'm personally looking evolutionary formula rather techniques used song synthesis.