Question: What reed instrument was played by Indian musician S. R. D. Vaidyanathan?
Sentence (from "Heckelphone-clarinet"): The heckelphone-clarinet (or "Heckelphon-Klarinette") is a rare woodwind instrument, invented in 1907 by Wilhelm Heckel in Wiesbaden-Biebrich, Germany.
Relevant evidence: No