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Club Foot Orchestra
Modified CasioRM at Black Rock City, August 2013 Legong, Dance of the Virgins at the San Francisco Silent Film Festival, July 20, 2013. Gamelan Sekar Jaya, Club Foot Orchestra SF Jazz Festival, Club Foot Orchestra performing The Complete Metropolis, at SFJAZZ, April 14, 2013
The Passion of Leyla, A Chamber Opera Metropolis Concerto for Violin and Wind Ensemble: Alisa Rose with the Dartmouth College Wind Ensemble, February 20, 2016 Orquestra Voadora performs for 100K people at Rio Carnaval, February 9, 2016 Divide Light, premiere at Montalvo Art Center, August 13, 2008. Richard Marriott composer and Lesley Dill, concept, direction, and design

EXPERIMENTAL INSTRUMENTS

During his employment at Serge Modular Music Systems (1980-82), Marriott invented the "Modified Casio", in which a installed circuit board allowed the keyboard to be driven by control voltage sources such as an analog synthesizer. A later upgrade used an onboard voltage source and a comparator circuit to switch between the original clock and the voltage-controlled clock. This ability to frequency modulate the Casio resulted in a wealth of bizarrely beautiful sound. Among the musicians who used this modification were Throbbing Gristle, Snakefinger, Tuxedo Moon, Don Preston, Eric Drew Feldman, John Adams, and especially The Residents who purchased three of these instruments. The sound of the instrument was especially significant on the Resident's "Tale of Two Cities" and "The Mole Show" performances.

Here's the sound of the voltage-controlled Casio (together with a Serge Modular Synthesizer and other participants.

Vortex (1983)