This is the earliest track (1983) it's from the second, tape by factor X. As the first was a cassette covered thickly with black gloss enamel paint. E.T.A. stands for experimental tape art, the original tape was in lopsided stereo, but at some point I recorded it off into mono, the side A had a uncomfortable loop of mw french radio, with more casio keybroad sounds farted through various speakers