Description The Tombo Band 21 Deluxe is one of the finest Japanese tremolo harmonicas. The construction is excellent, with the reed plates secured onto a wooden comb, producing a rich and full tone. This tremolo harmonica has 42 reeds and 21 tones.   It’s layout of 21 double holes with the reeds tunes slightly apart gives a beautiful tremolo effect. The extra thick brass reed plates and chromed covers give this harmonica a feel of quality.