Yamaha DGX220AD Portable Electronic keyboard w/ 76 full size piano box keys 76 Full Size Box Style Piano Keys 489 instrument voices including 116 standard, 361 Xglite, 5 "Sweet" , 3"Cool", and 12 Drum/ SFX kit voices Easy Song Arranger allows you to play back songs in 150 unique accompaniment styles PC connectivity via USB, MIDI, USB to External Device Storage Performance Assistant allows you to play along with and built in song regardless of your level of play