Seems to me that both music and language fall into the same category of "patterns whose consumption will trigger a highly subjective experience (pleasurable or repulsive)". AIs as pattern matching machines can do this pretty well by now. Coding, however, is a separate category, one where cold, hard logic reigns supreme. Code is not consumed to illicit a subjective response but to work, fullfil its job - which might explain the gap between these two.