The Alan Sondheim Mail Archive

April 2, 2010

Alan Sondheim, with Johnson-Sondheim synthesizer, saxophone

More from the archives.

I think this must be around 1973-1975; the background sound (which makes
the pieces as far as I'm concerned) is an analog synthesizer Greg Johnson
and I constructed literally from scratch (no diagrams available, only
transisters and a few op amps) around 1968-69. The sound is from over-
drivern voltage-controlled oscillators (VCOs), which locked into higher
'harmonics' of the system, due to their inherent instability. The driver
was a very slow subsonic sound-wave. The improvisation deliberately goes
nowhere (a fault of mine) and could have gone on forever.

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