What it is About :
Thedouble bass harmonica is not exactly a common instrument. It was morepopular several decades ago, when harmonica ensembles were more common.The bass harmonica is a double-deck instrument with two hinged bodies,the lower having all the natural notes, and the upper having all thesharps/flats “ so it is fully chromatic covering a range of two octaves,starting with EE (like the lowest note on a bass guitar). Each of theholes of the harmonica has two reeds tuned an octave apart “ thus thisharmonica has 58 reeds total. The double bass harmonica is an all blow?instrument.