The 1948 Sackbut Demonstration Tapes (1953) are narrated by Le Caine, and illustrate well-known wave forms (square, pulse, sawtooth) played with the touch-sensitive keys and timbral controls of the Sackbut, now recognized as the “first” analogue synthesizer. The Sackbut is accompanied by piano and the prototype Touch Sensitive Organ, the tracks combined using the prototype Multi-track Tape Recorder.
Sackbut String Quartet (C.W. Glück, arr. Le Caine) (2:10) replicates the sounds of string instruments using multiple recordings of the Sackbut.
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Also part of Compositions Demonstrations 1946-1974 .