The pungi, bīn or Murli is a musical instrument that originates from the Indian subcontinent. The instrument consists of a reservoir into which air is blown and then channelled into two reed pipes. It is played with no pauses, as the player employs circular breathing. In street performances, the pungi is used for snake charming.

Circular breathing is a breathing technique used by players of some wind instruments to produce a continuous tone without interruption. It is accomplished by inhaling through the nose while simultaneously pushing air out through the mouth using air stored in the cheeks.