Kirtan & Sufi chanting, or devotional music, is seen as a form of yoga for the voice, accompanied by music. It creates a meditative and uplifting experience for the mind, body and soul which helps melt inhibitions that suppress your voice and expression.
You add you voice to those around you creating a sense of connection and harmony. Some people feel a sense of calm, others a sense of elation. This is a great way to unblock emotions, and is a whole lot of fun!