Yeah, the piano in the PSR-S910 is the same Live!Grand that's in the S900...I like it; it works very well for playing along with styles...I take a bit of the filter brightness down by -12 and it works nice with Jazz Ballads....rounds off the edge really nice.

No complaints about the piano from me.
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Yamaha Tyros4, Yamaha MS-60S Powered Monitors(2), Yamaha CS-01, Yamaha TQ-5, Yamaha PSR-S775.