Diatonic, single reed harmonicas feature reeds tuned to produce the natural notes of the musical scale - without any additional sharps & flats (a diatonic instrument). They are ten-hole instruments with the four middle holes comprising a complete eight-note octave - the holes on either side permit chord playing. They are capable of producing bending & overblowing, which will allow the player to achieve sharps and flats. The original blues harmonica with the legendary sound. The Marine Band with its traditional pearwood comb and unique cover design has been manufactured for more than 100 years and is still the instrument of choice for top professional players. Includes new packaging convenient for music stores!