The CONCERTO STEEL is a high grade octave-tuned double-reed diatonic. The notes are aranged exactly like on a 10-hole diatonic (Richter tuning). The compact design and the typical full sonoric octave sound makes the CONCERTO STEEL the ideal musical companion for events of all kinds - the ideal pocket orchestra for assertive melody and full chord playing. The CONCERTO STEEL has a divided comb made of maintenance-free plastic and profits from the approved stainless steel reeds well known for durability and tuning stability. Tuning stability is especially important for octave-tuned harmonicas where two reeds in one channel are either tuned exactly an octave apart. When drawing or blowing, the two reeds oscillate simultaneously, giving a full organ-like sound. Built-in windsavers (half-valving) minimize air loss, improve tone control and increase the overall volume while the playing pressure remains moderate.