http://dswarmsikhttkg7jgsoyfiqpj3ighupfrvuz5ri3lu5q2dlqyrpgk7ad.onion/share/archive/misc/zender.A_Roadmap_for_Orpheus.html
Let us
first look at the central level, i.e. the relationship between the parts
of a movement (the entire cantata contains 16 movements). Here, each
patterh number represents the shape of such a part; ifa movement
contains e.g. 9 different shapes, the above pattern is applied until the
number 9: shape 2 therefore appears four times in this movement, shape 3
three times, etc.