Featuring the same authentic piano sound and design as Roland's flagship FP-7, the FP-4 is a more affordable and streamlined version. It delivers concert piano sounds with the intricate details of an acoustic piano. You get touches like hammer and damper noise and string and key-off resonance, all delivered with a powerful 88-key multi-sampled piano sound engine. These authentic piano sounds are matched by the play of the Progressive Hammer Action II keyboard. It has a 128-voice polyphony, delivers rich sound through the integrated speaker system, and comes with a large variety of Session Partner accompaniment patterns (each with two variations) for full-band accompaniment.