 The situation is further complicated by an entry in a published catalog of Schaeffer's studio, "Répertoire acousmatique 1948–1980", naming the last production of 1952 as a work by Stockhausen lasting only 1 min 13 s, and titled "Étude "aux mille collants"" (Étude of a Thousand Splices) .Stockhausen also mentions a failed first attempt at realising the "Etude"