The Other Parts Of Harmonica

The other parts of the harmonica are the windsavers, mouthpiece and amplification devices.

Windsavers

Windsavers are one-way valves made from thin strips of plastic, knit paper, leather or teflon glued onto the reed-plate. They are typically found in chromatic harmonicas, chord harmonicas and many octave-tuned harmonicas. Windsavers are used when two reeds share a cell and leakage through the non-playing reed would be significant. For example, when a draw note is played, the valve on the blow reed-slot is sucked shut, preventing air from leaking through the inactive blow reed. An exception to this is the recent Hohner XB-40 where valves are placed not to isolate single reeds but rather to isolate entire chambers from being active.

Mouthpiece

The mouthpiece is placed between the air chambers of the instrument and the player's mouth. This can be integral with the comb (the diatonic harmonicas, the Hohner Chrometta), part of the cover (as in Hohner's CX-12), or may be a separate unit entirely, secured by screws, which is typical of chromatics. In many harmonicas, the mouthpiece is purely an ergonomic aid designed to make playing more comfortable. However, in the traditional slider-based chromatic harmonica it is essential to the functioning of the instrument because it provides a groove for the slide.

Amplification devices

While amplification devices are not part of the harmonica itself, since the 1950s, many blues harmonica players have amplified their instrument with microphones and tube amplifiers. One of the early innovators of this approach was Marion "Little Walter" Jacobs, who played the harmonica near a "Bullet" microphone marketed for use by radio taxi dispatchers. This gave his harmonica tone a "punchy" mid-range sound that could be heard above an electric guitar. As well, tube amplifiers produce a natural distortion when played at higher volumes, which adds body and fullness to the sound. Little Walter also cupped his hands around the instrument, tightening the air around the harp, giving it a powerful, distorted sound, somewhat reminiscent of a saxophone.