art direction Hartmut Pfeiffer engineer [balance] Heinz Wildhagen tracks 12, 17, 18 engineer [recording engineer] Karl-Heinz Schiller tracks 1 to 11, 13 to 16 engineer [recording engineer], executive-producer Günther Breest tracks 12, 17, 18 executive-producer Elsa Schiller liner notes Constantin Floros liner notes Fred Ritzel liner notes [english translation] Mary Whittall painting [cover] Udo Nolte piano Martha Argerich Phonographic Copyright (p) Polydor International GmbH Copyright (c) Polydor International GmbH Recorded At Beethovensaal, Hannover Recorded At Plenarsaal Der Akademie Der Wissenschaften Produced For C.I.L. Ltd Made By PMDC, Germany Recording: Beethoven-Saal, Hannover, 7/1960 (tracks 12, 17-18); Plenarsaal der Akademie der Wissenschaften, Munich, 7/1971 (1-11, 13-16). Digitally remastered. Total time: 64:04 mins.