See picture above. Embouchure The method of applying the lips and tongue to the harmonica. Often refers to any technique that manipulates the air stream. A pitch raising bend where the reed initially opens away from its slot. Overblow An advanced type of bend that plays the opposite reed in an opening rather than closing fashion.
Overblows raise the pitch of the natural note, whereas normal bends lower the pitch.
The natural notes of the harmonica when played in different positions yield characteristic modes. See picture above. Reed plate The mounting plate for the harmonica reeds. See picture above. Resonance An amplification effect due to sound waves echoing and superimposing to reinforce certain audible frequendies.