Complex sentence: Bangalore Nagarathnamma (3 November 1878-19 May 1952) was an Indian Carnatic singer, cultural activist, scholar, and courtesan, who started the Tyagaraja Aradhana festival in memory of Carnatic singer Tyagaraja at Thiruvaiyaru.
Split into simpler sentences: Bangalore Nagarathnamma (3 November 1878-19 May 1952) was an Indian Carnatic singer, cultural activist, scholar, and courtesan. Nagarathnamma founded the Tyagaraja Aradhana festival in memory of Carnatic singer Tyagaraja at Thiruvaiyaru.