In his liner notes and broadcasts, [pianist Glenn] Gould created more than two dozen alter egos for satirical, humorous, or didactic purposes, permitting him to write hostile reviews or incomprehensible commentaries on his own performances. Probably the best-known are the German musicologist “Karlheinz Klopweisser”, the English conductor “Sir Nigel Twitt-Thornwaite”, and the American critic “Theodore Slutz”.
From the liner notes to Bach Partitas, Preludes and Fugues, p. 14: Sony CD SM2K-52597.
Via: Wikipedia