The Yamaha YPT255 features 375 natural sounding voices including Stereo Grand Piano, 361 XGlite voices, 12 drum kits and a sound effect kit. The YPT255 also has 100 accompaniment styles and 102 built-in songs. Use the Portable Grand button to instantly call up an authentic stereo grand piano sound. The instrument also has a rich Reverb effect that adds concert-hall ambience to any performance. The Yamaha Education Suite feature makes learning and practicing music more fun than ever before.