Sattriya is a classical dance-drama performance art with origins in the Krishna-centered Vaishnavism monasteries of Assam, and attributed to the 15th century Bhakti movement scholar and saint named Srimanta Sankardev. One-act plays of Sattriya are called Ankiya Nat, which combine the aesthetic and the religious through a ballad, dance and drama.[89][90] The plays are usually performed in the dance community halls (namghar[90]) of monastery temples (sattras). The themes played relate to Krishna and Radha, sometimes other Vishnu avatars such as Rama and Sita