The invention provides systems and methods of for displaying on a second instrument finger positions that were played on a first instrument. A teacher, for example, can play notes and/or chords on a first stringed instrument having a sensor. A processing having a decoder and a message generator can receive signals from the sensor and generate messages that are communicated to a light-system in the second instrument. The light-system displays the finger positions on the second instrument, each finger position corresponding to a finger position played on the first instrument. The processor can receive sensor information from the second information that can be used to determine whether a displayed finger position was correctly played on the second instrument.