PSRE273 Yamaha 61 Entry-level Key Portable Keyboard BRAND NEWBRAND NEW PSRE273 Yamaha 61 Entry level Key Portable Keyboard 61 key, entry level Portable Keyboard featuring a wide variety of sounds and functions the PSRE273 is an i deal first keyboard for aspiring musicians who are just starting out. The PSRE273 combines Yamaha quality Voices and Styles with sophisticated practical learning functions that inspire beginner players to realize their potential and develop enthusiasm for learning and playing music.