This harmonica has a one octave lower range than a 21-hole Tremolo harmonica. Play this harmonica for a rich, deep ensemble sound. The Baritone harmonica has 21 holes with a range of C through C3 in the keys of C. The polished ABS comb holds the solid brass reed plates and laser tuned reed system. The gloss black, brass reed covers are shaped for maximum playing comfort. The BR-21 comes in a custom moulded carrying case with formed fit, soft lining.