Sangita Kalanidhi T.M. Thyagarajan, known as TMT sir, is remembered as a knowledgeable and patient Carnatic music guru. He taught students compositions, focusing on individual correction without losing his temper, often using the gentle term "Ara Nai" for forgetfulness. TMT sir also set to music works by various composers, including Vallalar and others, many of which were taught to students and recorded. His students and fellow artists recall him as a humble mentor who shared his extensive knowledge without ostentation.