This is a Hohner Corona II in keys of ADG,two voice instrument, wet tuned, German made, with the classic Hohner sound. The outside row of buttons in key of A give some useful note reversals not found on a DG melodeon. Specifically push E and pull D. If you happen to play across the G and D rows then familiar key patterns are also available across the D/A rows, without requiring hours of practice to learn new patterns.
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