Flash ROM Download songs from the internet. Arpeggiator plays arpeggios when you are playing stic chords. The Registration buttons are conveniently located just above the keyboard. The YPT-400 takes full advantage of this know-how, giving you an extensive range of nine, top-quality reverb effects that simulate playing in everything from a small room to a large spacious concert hall and four chorus effects that add richness to electric pianos and guitars in particular.