ChucK is a strongly-timed, concurrent, and On-the-fly Audio Programming Language.
ChucK vs. TextMate
A Bundle to edit ChucK files in the TextMate editor is created at Github.
To install it execute in Terminal:
cd ~/Library/Application\ Support/TextMate/Bundles \ git clone git://github.com/tasmo/ChucK.tmbundle.git ChucK.tmbundle