most classical musicians r in the order

[Honest]

so

why is this the case?

classical music is about imposing order on nature, organising sounds based on mathematical principles. classical music is most enjoyed when listeners employ their reasoning faculties to follow the themes as they develop, invert, resolve etc.
and so we find strong parallels to freemasonry in classical music.
also, free masons absolutely love theaters/concert halls.

if there are activities that historically require buildings (museums, classical music, art galleries, libraries, courts etc.), then free masons were probably heavily involved. because theyre sick fuckers who hate natural enlightenment (the sun).