An audio programming language is a
programming language specifically targeted to sound and
music production or
synthesis.
ABC
ChucK : strongly-timed, concurrent, and on-the-fly audio programming language
CMix
CMusic
Common Lisp Music (CLM)
CSound
Haskore
HMSL
Impromptu [1]
jMusic
JSyn
Loco, designed to be for sound what Logo is for graphics
Max/MSP
Music I
Music-N
Nsound [2] C++ API for sound synthesis
Nyquist
OpenMusic
Pure Data
Q-Audio [3]
Real-time CMix
Soundscrape [4]
SuperCollider