I was the one that composed Cold Tea in 1979 and my friend Rob Cope wrote the program to be able to play it in around 1980-81. I think he also transcribed the other songs in this collection using the same program. Was an exciting journey of discovery!
I was talking to someone about how mesmerized I was by this when I was maybe 9 or 10. Model B, my uncle brought one home from school at weekends, I remember the floppy disks.