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Sold at Auction: 1978 Roland GR-500 Vintage Guitar Synthesizer
Roland GR-500, GS-500 and PC-50 | matrixsynth.blogspot.com/2… | Flickr
Roland GR-500 1977 Vintage Analog Guitar Synthesizer - Photos, Videos, Documentation
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1977 | Roland GR500: Overview – Rob OReilly | Expressiv MIDI Guitars
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1977 | Roland GR500: Overview – Rob OReilly | Expressiv MIDI Guitars
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1970s Roland GR-500 Guitar Synth
Roland GR-500 1977 Vintage Analog Guitar Synthesizer - Photos, Videos, Documentation
1977 | Roland GR500: Overview – Rob OReilly | Expressiv MIDI Guitars
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