uh yeah... derek bailey only used a volume pedal (or 2 when he did stereo sound) and amplification and relied mostly only his technique to create the most obtuse sounds possible from the instrument, however in the 70's he did use a something called the 19 string guitar, and modified 12 string epiphone acoustic with additional strings and detuned ones and some noise generating device called a Crackle Box created by Michel Wascicz.
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