Yamaha PSR E273 Portable Keyboard - 61 Keys61 key, entry level Portable Keyboard featuring a wide variety of sounds and functions the PSR E273 is an ideal first keyboard for aspiring musicians who are just starting out. The New Standard For Portable Keyboard As much an educational learning tool as it is a musical instrument, the PSR E273 combines Yamaha quality Voices and Styles with sophisticated practical learning functions that inspire beginner players to realize their potential and develop