The MT-300S comes with a built-in 16-track sequencer that lets you create your own multi-instrument songs using your digital piano. By following the “bouncing ball” on the display in time with the music you can also improve your sense of rhythm. A collection of rhythm patterns for various music genres are built-in, making it easy to create original data for practice and performance. The MT-300S also comes equipped with a built-in amp and speakers, so you can play or practice acoustic instruments along with your music files -anytime, anywhere.