Germany, Nordrhein-Westfalen, Breiniger Berg near Aachen, lab recording, 1977-1981 (Kenwood KX880HXn with copy of Uher Report 4400, tape: TDK SA-X90, tape no. KW90:30.00-38.20, filter: 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