Thyagaraja ( 1759 ?- 1847 ), Muthuswami Dikshitar ( 1776 - 1827 ) and Syama Sastri ( 1762 - 1827 ) are regarded as the trinity of carnatic music. Prominent composers prior to the trinity include Vyasatirtha , Purandaradasa , Kanakadasa . Other prominent singers are Annamacharya , Oottukkadu Venkata Kavi