Avinash Balkrishna Patwardhan born 30 August 1953 in Nagpur, Maharshatra (India) is a civil engineer and a law graduate who has profound knowledge and interest in Indian classical music. He is the first person in recent centuries to unveil and demonstrate the Sarana Chatushtai as originally suggested by Bharata Muni in the Bharata Natya Shastra which is the only way to obtain 22 srutis (notes useful to music) on a musical instrument. He started his career as an engineer with the state government of Maharashtra. Later he went into teaching civil engineering and eventually joined social work. He was a part of the Knit India movement (1985-1988) and Narmada Bachao Andolan (1998-1993) with late Baba Amte. He also worked with Dr. Vikas Amte for Earthquake Relief at Killari, Maharahstra (1993-1994). He started his research on Indian classical music in the 1990\s which led to his work on the