ZX81 Music Interpreter

This program implements in the ZX81 a musical macro language similar to the one used in the "PLAY" command of the TRS Color and MSX microcomputers. All subcommands necessary for playing songs in a wide range of scales were implemented, with sound generation through the EAR port (VSYNC) of the ZX81.

All instructions for use are contained in the package, as well as the sources and two demo programs, one with Beatles songs and the other with different songs.