The PSR-E273 Yamaha Portable Keyboard features a wide variety of sounds and functions for beginners. 61 full-sized keys are great for learning and developing keyboard playing technique. The Yamaha Education Suite can be used with the more than 100 preset songs, making it the ideal first keyboard for aspiring musicians and the aux line input allows you to connect any music device with a headphone output, such as an Mp3 player, a computer, a mixer or even another instrument, and hear it through the internal speakers​.