oops forgot to add that, like cm, you only get microtones if you
generate floating point keynums!
(define (micro n r k1 k2)
(go ((i 0 (+ i 1)))
((= i n) )
(send "mp:note" #:key (ran k1 k2)
#:chan (ran 0 8))
(wait r)))
(sprout (micro 30 .2 40.0 70.0))