Electronic Dance Music
Found an LP of this modernist choreographer Alwin Nikolais's electronic music at the annual yard sale of the apartment block over the road from us in New York several years ago. Going for $1! Amazing sleeve.
You can see one of his pieces recreated for the opening credit sequence of The Company, that disappointing very late period (last one before he croaked? Robert Altman movie on ballet.
There is a thread running through avant-classical electronic/concrete music that involves the partnership of composers with radical ballet choreographers -- Pierre Henry et le chorégraphe Maurice Béjart, Warner Jepson and the San Francisco ballet company, some others I'm blanking on...