The YPT230 offers pure playing pleasure for both beginners and experienced players! The YPT-230 features 385 natural sounding voices, including Stereo Grand Piano, 371 XGlite voices, 13 drum kits and a sound effect kit. The YPT-230 also has 100 accompaniment styles and 102 built-in songs. The keyboard also has a rich Reverb effect that adds concert-hall ambience to any performance. Use the Portable Grand button to instantly call up an authentic stereo grand piano sound. One dedicated button brings up a great sounding piano, stunningly rich and authentic in its sound and exceptionally responsive to your playing touch, as well as setting up the keyboard to play as a piano. In addition to the 102 songs mentioned above, the YPT230 also has auto accompaniment styles that follow your playing. Simply select a style of music from the 100 built-in Styles (example Rock), play a single note or chord on the left side of the keyboard and play your melody on the right side. The YPT230 will create a backup band (bass, drums, strings, guitar etc.) and follow you through the song. You can play your songs and try different genres of music. It"s both fun and entertaining. The music pathway to your computer and the Internet is MIDI. It"s the way that keyboards communicate with computers. And because the YPT230 is both General MIDI (GM) and XGlite compatible, you have access to thousands of MIDI song files on the Internet. Yamaha YPT-230 61-Key Personal Keyboard: * 385 voices * 371 XGlite voices * 13 drum kits * Sound effects kit * 100 accompaniment styles * 102 built-in songs * General MIDI and XGlite compatible * Battery mode requires 6 AA batteries (not included) * Dimensions: 42"L x 16"W x 6"H