>  ÆTHRA is output-oriented: you write a script → run it → get a WAV file.

You are competing with traditional noninteractive usage of CSound. What do you think you can do better than CSound? More generally, what are the peculiar and valuable ÆTHRA features that you want to develop well?

The current language is relatively verbose and readable (more suitable for live coding than for a "music compiler"), but somewhat simplistic and ad hoc on the notation side (e.g. no separate tracks, parts etc.) and not very general on the sound synthesis and processing side (e.g. fixed waveforms and keywords for effects).