A harmonica (or mouth organ, mouth harp) is a small rectangular wind instrument with a row of metal reeds along its length, held against the lips and moved from side to side to produce different, blown notes. or sucking. There are two main categories of harmonica: Chromatic – which can play all the notes in the chromatic scale and is used mainly in Jazz and classic music and Diatonic – which contains only the notes of a specific scale and is used mainly in Blues, Rock, Country and Pop. Harmonicas and Recorders are available now at Musicalinstruments.pk. Buy Harmonica and Recorder from huge brands and more!