lab recording, 1983 (Kenwood KX880HX with copy of Uher Report 4400, tape: TDK SA-X90, tape no. KW89:32.45-38.45, bandbass 11917 Hz, 866 cent.)

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith