Kerala also has several tribal and folk art forms. For example, Kummattikali is the famous colorful mask-dance of South Malabar, performed during the festival of Onam. The Kannyar Kali dances (also known as Desathukali) are fast moving, militant dances attuned to rhythmic devotional folk songs and asuravadyas. Also important are various performance genres that are Islam- or Christianity-themed. These include "oppana", which is widely popular among Keralite Muslims and is native to Malabar. "Oppana" incorporates group dance accompanied by the beat of rhythmic hand clapping and "ishal" vocalizations.