This was way before the looper concept came into being. Robert Fripp was ahead of his time.
Getting of the subject a bit more, but my brother Joe had worked with Gary Hall and Bob Sellon at Lexicon to come up with what I think was the first commercial looper that was named JamMan.
It was derived from the PCM42. Eventually Lex got sold and Digitech took over the manufacturing. Did some informal beta testing on JamMan.
Yep, that was in the early 90's if I recall correctly. Almost bought the AES show demo one but couldn't stick around till Sunday night to grab it.
Small world. We used to play the town Lexicon was manufactured in (Waltham Mass if I recall correctly, Mr. Bills was the club) and some of the guys would come over and watch the band. Fun times.