This instrument belongs to Langa Community of western Rajasthan. It is said that this instrument was first used by the shepherds while they took there animals for grazing. Later it was adopted by the Langaa community. Morchang is Jews harp is an elastic thin iron strip called the tongue a fixed to a circular iron ring.
The mouth organ used to be a popular musical instrument, glamourised by Hindi film heroes. Sadly, this instrument is now losing its popularity.