Panchavadyam is a form of percussion ensemble, in which artists use five types of percussion instrument.[67] Kerala's visual arts range from traditional murals to the works of Raja Ravi Varma, the state's most renowned painter.[65] Most of the castes and communities in Kerala have rich collections of folk songs and ballads associated with a variety of themes; Vadakkan Pattukal (Northern Ballads), Thekkan pattukal (Southern Ballads), Vanchi pattukal (Boat Songs), Mappila Pattukal (Muslim songs) and Pallipattukal (Church songs) are a few of them.[68]