http://www.yamaha.com/clavinova
Even if you’re playing alone, the Clavinova CSP can put an entire backing band behind you! One of the defining features of a CSP Clavinova is the multitude of different Styles that can be controlled in real-time by playing chords on the keyboard. Accompaniment Styles introduce ensembles of virtual musicians to your performances in a variety of musical genres. From small jazz ensembles to full orchestras, you control what chords or harmony they play by what you play, plus you control the dynamic of the ensemble. Developed by professional session musicians from around the world, Styles add authentic, studio-quality backing players to your performances - even when you play by yourself.