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Roland GS-500 GR-500 Vintage Analog 1977 Guitar Synthesizer Controller
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1970s Roland GR-500 Guitar Synth
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Roland GR-500 (SI Dec 78)
Roland GR-Series
Roland GS-500 GR-500 Vintage Analog 1977 Guitar Synthesizer Controller
Roland GR-Series
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MATRIXSYNTH: Roland GS500 & GR500 Guitar Synthesizer Controller
MATRIXSYNTH: Roland GR-500 Guitar Synthesizer
MATRIXSYNTH: Roland GR-500, GS-500 and PC-50
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Roland GS/GR-500の誕生秘話〜世界初のギター・シンセはどこからきたのか？ | ギター・マガジンWEB｜Guitar magazine
1978 Fujigen/Roland GS-500/GR-500 Guitar Synthesizer Sunburst W/ Original Manual! | Reverb
