Harmonica

  The harmonica is also called harp, French harp, blues harp, and mouth organ. It is a free reed wind instrument primarily used in blues and American folk music, jazz, country music, and rock and roll. It is played by blowing air into it or drawing air out by placing lips over individual holes (reed chambers) or multiple holes. The pressure caused by blowing or drawing air into the reed chambers will cause a reed or multiple reeds to vibrate up and down creating sound. Each chamber has multiple, variable-tuned brass or bronze reeds, which are secured at one end and loose on the other end, with the loose end vibrating and creating sound.
 The reeds are pre-tuned to individual tones, and each tone is determined according to the size of each reed. Longer reeds make deep, low sounds while short reeds make higher-pitched sounds. On certain types of harmonica, the pre-tuned reed can be changed (bending a note) to another note by redirecting air flow into the chamber. There are many types of harmonicas, including diatonic, chromatic, tremolo, orchestral, and bass versions.

Harmonica

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