MIDI on the SAM Coupé

Hi, I've been looking at 8-bit micro's recently and stumbled accross the SAM Coupé, which has some astounding capabilities.

I was particularly interested in the MIDI out. Luckly SIM Coupé lets you set midi out to the host computers MIDI player so it was just a matter of outing some bytes to port 253 to get it working and since GM is well documented (e.g. https://cmtext.indiana.edu/MIDI/chapter3_channel_voice_messages.php) I soon got a quick MIDI player working (below for example is a BASIC programme which loops through all MIDI instruments and percussion).

My question is mainly wandering how much MIDI out has ever been used in games/demos? For example if people would have gotten a Roland SC-55 or similar and used the SAM Coupé as a MIDI machine. I see there was at least one MIDI sequencer but not much more than that.

   10 SCROLL CLEAR

   20 REM Standard Instruments

   30 FOR t=0 TO 127

   40 PRINT "Instrument ";t

   50 midinst 0,t

   60 midplay 0,60

   70 FOR i=1 TO 500: NEXT i

   80 midstop 0,60

   90 FOR i=1 TO 250: NEXT i

  100 NEXT t

  110 midkill 0

  120 REM Percussion

  130 FOR t=33 TO 81

  140 PRINT "Percussion ";t

  150 midplay 9,t

  160 FOR i=1 TO 500: NEXT i

  170 midstop 9,t

  180 FOR i=1 TO 250: NEXT i

  190 NEXT t

  200 midkill 9

  210 SCROLL RESTORE

  220 STOP

  230 REM Change Instrument (Channel, Instrument)

  240 DEF PROC midinst c,i

  250 OUT 253,&c0+c

  260 OUT 253,i

  270 END PROC

  280 REM Play Note (Channel, Note, Velocity=127)

  290 DEF PROC midplay c,t,v

  300 DEFAULT v=127

  310 OUT 253,&90+c

  320 OUT 253,t

  330 OUT 253,v

  340 END PROC

  350 REM Release Note (Channel, Note, Velocity=64)

  360 DEF PROC midstop c,t,v

  370 DEFAULT v=64

  380 OUT 253,&80+c

  390 OUT 253,t

  400 OUT 253,v

  410 END PROC

  420 REM Silence Channel (Channel)

  430 DEF PROC midkill c

  440 OUT 253,&b0+c

  450 OUT 253,123

  460 OUT 253,0

  470 END PROC