<p>Systems and methods for producing sounds in musical instruments are provided. In one approach, a musical instrument includes: a primary sound producing mechanism; a primary sound producing surface, wherein movement of the primary sound producing mechanism by a user causes the primary sound producing surface to produce a sound; a secondary device contacting the primary sound producing surface; and a controller operatively connected to the secondary device and configured to cause the secondary device to vibrate the primary sound producing surface to produce a sound by the musical instrument.</p>
