Question: What reed instrument was played by Indian musician S. R. D. Vaidyanathan?
Sentence (from "S. R. D. Vaidyanathan"): S. R. D. Vaidyanathan (Tamil: S.R.D. வைத்தியநாதன்; 15 March 1929 − 18 November 2013) was an Indian musician who played the Nadhaswara.
Relevant evidence: Yes