To recreate the playability of an acoustic piano, Piaggero features Yamaha's own Graded Soft Touch (GST) keyboard, giving keys in the lower octave a heavier touch than those in the upper octaves. While this scaled level of resistance is graded for a piano-like response, the keys themselves are not weighted for the sake of portability. This brings the NP-V60 in at less than 14 pounds but still provides a touch that all pianists can appreciate. Along with superb grand piano sound, Piaggero features a number of popular instrument Voices, such as organ, strings, and guitar all recorded using Yamaha's AWM (Advanced Wave Memory) stereo sampling technology for amazingly true-to-life sound. And for a complete orchestra of sonic options, Piaggero includes XGlite Voices and drum/SFX kits. This ensures compatibility with the wealth of Standard-MIDI and XG song files available today. Piaggero NP-V60 boasts 160 preset Styles -- from the basic rock and jazz beats to contemporary electronic rhythms -- that follow and backup the performer with dynamically responsive accompaniment. Every Style is essentially a backup band of virtual virtuosos ready to follow your lead. Piaggero Styles all feature custom intros, variations, and endings giving you total control over your arrangement. Go ahead and play a couple of extra verses at the end of your performance… Piaggero can handle it.