The 12-hole chromatic Hohner #7539 Hard Bopper Chromatic Harmonica was designed and constructed to specifications provided by harmonica legend Toots Thielemans. Toots recommends the Hard Bopper's thicker reedplate for blues or rock. The Hard Bopper harmonica's reed design permits the articulate, fast runs demanded by jazz. The Hohner #7539 Hard Bopper harp features a pearwood comb and chromeplating on both covers and mouthpiece.