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5件の回答 3 スコア |
Korg B1 - specific notes don't work, problem with circuitry |
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1 件の回答 1 スコア |
4 piano keys not working (seems electronic problem) |
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2件の回答 1 スコア |
Enquiry about Gem Real Piano RP800 |
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1 件の回答 0 スコア |
Piano Keys very low volume |
