Harmonica                

            The Mouth Harp, Additionally Known As French Harp, Blues Harp, And Harp, May Be A Free Reed Musical Instrument Used Primarily In Blues And Yankee Ethnic Music, Jazz, Country, And Rock And Roll. It's Contend By processing Air Into It Or Drawing Air Out By Putting Lips Over Individual Holes (Reed Chambers) Or Multiple Holes. The Pressure Caused By Processing Or Drawing Air Into The Reed Chambers Causes A Reed Or Multiple Reeds To Vibrate Making sound. Every Chamber Has Multiple, Variable-Tuned Brass Or Bronze Reeds, That Area Unit Secured At One Finish Solely, Effort The Opposite Liberal To Vibrate.
            Reeds Area Unit Pre-Tuned To Individual Tones, And Every Tone Is Decided In Line With The Scale Of Reed. Longer Reeds Build Deep, Low Sounds And Short Reeds Build Higher-Pitched Sounds. On Bound Sorts Of Mouth Harp The Pre-Tuned Reed May Be Modified (Bending A Note) To A Different Note By Redirecting Air Flow Into The Chamber. There area Unit Many Varieties Of Harmonicas, Together With Diatonic, Chromatic, Tremolo, Octave, Orchestral, And Bass Versions.