[1][2] Mohan Vaidhya is the son of noted ghatam artiste K. M. Vaidyanathan and the nephew of music composer G. Ramanathan.
He is the elder brother of noted veena player Rajhesh Vaidhya, and his family grew up closely inclined to classical music.
He also became the vocalist for Vilasini Natyam exponent Swapna Sundari, Leela Samson, Yamini Krishnamurthy and Bharati Shivaji.
[4] In the early 1990s, Mohan moved to Chennai and hosted Ragam Sangeetham, a Carnatic music based quiz show on Raj TV.
[5] On one episode, after a drama, Meera Mithun began sobbing uncontrollably, and Mohan went to her and consoled her after some time.