ProKeys Sono 88 is a semi-weighted 88-key digital piano, a USB-compatible MIDI controller, and a computer audio interface. Play the on-board premium keyboard sounds as a standalone instrument, or plug a microphone and guitar into ProKeys Sono to record audio utilizing the included recording software. ProKeys Sono instantly transforms your computer into an incredibly versatile music studio. We recommend you spend a few minutes reviewing this Quick Start Guide to ensure proper setup. ProKeys Sono