Michael Wessel (LambdaMikel) has written a python converter of MIDI music files which can then be read on an Amstrad CPC with a player with at least 2 hardware expansions (with 512 Kb support and soon 4 Mb support) :

• The Ultimate CPC MIDI Sound & MIDI Interface Card by LambadMikel
• Willy which can use either a S2P by Serdashop to use MIDI or the OPL3LPT by Serdashop to play adlib music with SA2 Surprise! Adlib Tracker by Madram and a VGM player by PulkoMandy

MIDI was the ultimate sound during the msdos era before windows 95 and the coming of audio card with samples like the Gravis Ultra Sound, it is time that MIDI arrives on Amstrad CPC.