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Yamaha DGX-670 long demo | Hear It #1
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Yamaha DGX-670 piano | Long play #1
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Yamaha DGX 670 - all Organ Sounds
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Yamaha DGX-670 - New Features
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Démonstration du piano numérique YAMAHA DGX-670 - Magasins SEVENEANT MUSIQUE
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