CS325-USER> (let ((yason:*parse-object-as* :alist))
	      (yason:parse "{\"activeFramePerNote\":{\"60\":[181],\"62\":[601],\"64\":[1085]},\"duration\":21.68}"))
(("duration" . 21.68) ("activeFramePerNote" ("64" 1085) ("62" 601) ("60" 181)))
CS325-USER> (yason:encode-alist *)
{"duration":21.68000030517578,"activeFramePerNote":[["64",1085],["62",601],["60",181]]}
(("duration" . 21.68) ("activeFramePerNote" ("64" 1085) ("62" 601) ("60" 181)))
CS325-USER>