MUKUNDA DATTA, the son of Vasudeva Datta, was a classmate of Lord Caitanya's. Mukunda Datta had a melodious voice, and he knew the intricacies of musical meters and ragas. Lord Caitanya took sannyasa amidst Mukunda Datta's kirtana.
(See Sri Caitanya- caritamrta, Adi-lila 10.40 and 17.65 and Madhya-lila 11.137-140.)