The master key Chromatic Pitch Instrument Kratt

The Kratt MK-2 Master Key is a highly portable and incredibly accurate solution for tuning and teaching pitch recognition — even in the noisiest environments! The MK-2’s fully chromatic range ensures truly universal application, from large instrument ensembles to individual vocal lessons. Plus, 13 hand-tuned bronze reeds, clearly marked by note, provide perfect-pitch results across the MK-2’s range, all easily accessed by simply blowing into the pipe.