Tonally coordinated hand bellowsChromatic extension to the diatonic set – middle registerKeys: C#”/Db”/ D#”/Eb”/ F#”/Gb”/ G#”/Ab”/ A#”/Bb”Simple intuitive playing techniqueDifferentiated long note playing possibleChroma Notes colour codingDifferentiated dynamic playing possibleRobust and resilient materialEasy to transport due to small sizeEasy to clean
