KeyStudio 49i Keyboard-based Music Production System. The KeyStudioεi delivers everything you need to start making and recording music today. It's the fi rst USB keyboard controller with a built-in audio interface and premium piano sound. Play the on-board piano as a stand-alone instrument then plug the USB cable into your computer to play a total of 128 sounds and listen to them from the keyboard's audio outputs. The built-in interface even lets you record vocals and instruments as well as listen to your sessions and mixes. The included Ableton Live Lite software seals the deal by providing an incredibly easy-to-use music production solution. The KeyStudio 49i instantly transforms your computer into an incredibly versatile music studio.