CASIO Electric Keyboard 49Black CTK-240 (Japan Import) Song bank loading (music book attachment) &lt;&gt; lesson functional loading with 50 built-in music! Melody which erases the melody portion of music with a built-in song bank, flips by itself, and can carry out a lesson An ON-and-OFF function is carried. the 100 tones &lt;&gt; which burst firmly the liquid crystal display which displays various information, including a tone, a rhythm, a built-in music name, a code, tempo, , melody ON and OFF, etc., in loading &lt;&gt; high-quality sound -- the 100 rhythms &lt;&gt; of a variegated genre -- the automatic accompaniment function in which accompaniment of a variegated rhythm can be performed in the back 49 standard keyboard &lt;&gt;2 speaker