windchime is a generative music system that adds another dimension to the act of composing written text, whether it be software or English.
(see a video of this)
Download a binary from the downloads page - it works on OSX 10.7+. You'll need to enable assistive devices:
It's initially aimed at 'coding' and thus
pulls together word-painting tropes like having a
[ start a phrase and
] sound a cadence.