A musical instrument training device, system, and method are provided for teaching a plurality of wind instrument embouchures. The first circuit may be configured to arbitrate a plurality of input request signals and present one or more first control signals. The optical fibers provide a high speed interconnect between two or more electronic devices attached to the PCB. This subset is selected by programmable control indicators. The location of the light is then viewed through the patient’s skin to confirm the positioning of the elongate member.