Studie voor piano en radiofonische pianogeluiden (1959) (CD5#3)

“In the summer of ’59 I composed my Study for piano and radiophonic piano sounds. This is a combination of mechanical and live music; the mechanical part is generated by a tape recorder, the live music by a piano part which is played simultaneously whilst the tape is played. In the piece I have taken four tones as focal point: G double sharp, A sharp, B and C. These four tones have 24 successions in a similar metre. This table has undergone effects to that extent that pitching and length of tones have become of secondary importance. Percussions, from the strings, rhythmic rushing, for the sound board, echoes of the three minor 2nds - all these sounds come from the piano. The idea is to put the pianist in the centre behind a grand piano, with the orientation score in front of him, loudspeakers on the left and right. Thus, sound will move stereophonically and antiphonically.”

(translation of the introduction by Ton Bruynèl on CD 5 # 2)