Karlheinz Stockhausen, "Klavierstück IX"

-- Liner Notes (Continued) --

9. Klavierstück IX [9'42"]

Recording equipment:
Microphones: Neumann U 67, Telefunken KM 54, three Sennheiser MD 421s. The Klavierstücke I, II, III, IV, V, VIII & IX were recorded with one KM 54 and two MD 421s, Klavierstücke VI and XI with an additional U 67 under the piano to bring out the bass. Klavierstücke VII and X with the additional U 67 (as for VI and XI) used still another MD 421 (cardioid) directly above the piano strings to bring out the long, sustained resonant tones.
Recorder: Studer C 37 Stereo.
Three-channel mixer: Kudelski (Paudex near Lausanne) and Leonhard (Zurich).
Recording tape: AGFA PER 555, high output.
Monitor speaker: KLH, Model Four.
Music:
Kontarsky: Klavierstücke I-IV, V and VI, published by Universal Edition, reprint 1965; Klavierstücke VII and VIII, a photocopy of the manuscript that had been compared with the UE 1965 edition; IX and X, photocopy of the manuscript; XI, published by UE, new edition (1964).
Stockhausen and Kolbe: Klavierstücke I - VIII published by UE, 1965 edition; IX and X, a photocopy of the manuscript; XI, published by UE, new edition (1964).
Photographs were taken in the recording auditorium by Glattfelder, Winterthur, on July 2, 1965 from 10:00 to about 10:30 a.m. and from 3:30 to 4:00 p.m.