Natural Sound Spread from a Compact Design - a Piano Ready to be Played in Your Room With the CELVIANO series, we continue to strive for high instrumental performance that's characteristic of grand pianos. The beautiful, rich sound exceptionally expresses the users performance, so you can discover the true allure of the piano and the beauty of music itself. The AP-S200 offers excellent musical performance while featuring a compact design that can easily fit into interior spaces.