Well, yes, the SOUND program works at first, but once you stop it with CTRL+C and RUN it again, no sound is produced.
Also, I TLOAD-ed the Music Composer
program. It plays a music right after loading, but in M.E.S.S. the music is unrecognizable (notes have very short duration?), and not synchronized with the appearing of the notes on screen. After a little while (when there's no more notes to play?) the program halts.
There's still something that needs to be adjusted, but I don't know what.