Yamaha Clavinova CSP-170B Review My Review My Yamaha Clavinova CSP-170. Piano & App Overview The CSP Line of Clavinova Pianos, is very unique, in that you cannot separate the Smart Pianist App from the Piano, or you lose a lot of functionality. Basically, if Yamaha ever decides to stop supporting this app, the Piano pretty much becomes a 600 series Clavinova CLP. Anyway, the point I'm trying to make is that this review will not only be about the Piano Hardware. Guide Lights The top two tiers of the Clavinova line have guide lights built into the app and these will actually show you which notes to play and when to play them, by highlight using a series of lights, that are positioned directly above the keys Guide Light Supported Apps Synthesia Flowkey Smart Pianist All Lessons in the App 50 Builtin Popular Songs 50 Builtin Classical Songs User Songs Library Mus