Responding to myself:
What was your first computer ?
XT clone w. 20 MB hard-disk, in 1985 (?).
And for extra points:
What was the first music/sound software you used that really hooked you
into this making-music-with-computers fad ?
Voyetra's Sequencer Plus.
SP Gold is still in hard use here, running under a DOS emulator on
hardware I couldn't imagine back then.
Btw, thanks for the replies. They go well with the sunny autumn day
we're enjoying here in NW OH USA. :)
Best,
dp