The Harmonix Modular Harmonica System BX1 Module is a unique and versatile musical instrument that allows for creating custom tones and melodies. The bold design of the Harmonix modular system offers endless possibilities with its replacement cartridge system within the ergonomic base housing. The BX1 cartridge in this harmonica is in the key of C. Complete with its original storage box, it is as unusual a diatonic harmonica as you are likely to find.
