Question: T. M. Thiagarajan was awarded the title to an expert in what discipline by the Madras Music Academy?

Context paragraphs:
T. Viswanathan: Tanjore Viswanathan (b. Madras, India, August 13, 1927; d. Hartford, Connecticut, United States, September 10, 2002) was a Carnatic musician specializing in the Carnatic flute and voice.  He was awarded the Madras Music Academy's Sangeetha Kalanidhi in 1988.  His brother was the "mridangam" player T. Ranganathan (1925–1987).

S. Venkateswaran: Sundaram Ayyar Venkateswaran (2 January 1901 - June 1968) was a civil servant of the Indian Civil Service who served as Census Commissioner of Madras State during the 1951 census (the first Indian to hold the post) and the Chief Election Commissioner of Madras Presidency (later Madras State) from 26 June 1948 to 22 August 1952. He also served as Commissioner of Land Revenue for Madras State and Vice-President of the Madras Music Academy.

M. Balamuralikrishna: Mangalampalli Balamuralikrishna (6 July 1930 – 22 November 2016) was an Indian Carnatic vocalist, musician, multi-instrumentalist, playback singer, composer, and character actor.  He was awarded the Madras Music Academy's Sangeetha Kalanidhi in 1978.  He has garnered two National Film Awards (1976, 1987), the Sangeet Natak Akademi Award in 1975, the Padma Vibhushan, India's second-highest civilian honor in 1991, for his contribution towards arts, the Mahatma Gandhi Silver Medal from UNESCO in 1995, the Chevalier of the Ordre des Arts et des Lettres by the French Government in 2005, the Sangeetha Kalanidhi by Madras Music Academy, and the Sangeetha Kalasikhamani in 1991, by "the Fine Arts Society", Chennai to name a few.

Sangeetha Kalanidhi: Sangeetha Kalanidhi or Sangita Kalanidhi (Sanskrit: saṅgītakalānidhi ) ("sangeetha" = music, "kala" = art, "nidhi" = treasure) is the title awarded yearly to an expert Carnatic Musician by the Madras Music Academy.  It is often considered to be the most prestigious award in the field of Carnatic Music.

S. Rajam: Sundaram Rajam (Tamil: எஸ் ராஜம் ; 10 February 1919 – 29 January 2010) was an Indian actor, painter and Carnatic musician from the state of Tamil Nadu.  He was a student of the Carnatic musician Papanasam Sivan and the older brother of Tamil film director and musician S. Balachander and actress S. Jayalakshmi.  Rajam made his Tamil film debut in the 1934 film "Seetha Kalyanam".  He acted in a few more films in the lead role, before becoming a full-time musician and painter.  He worked as a staff artiste and music supervisor at the All India Radio.  He is known for his series of portraits of the Trinity of Carnatic music.  He is also known for popularising Koteeswara Iyer's musical compositions.  He was a member of expert committee of the Madras Music Academy.

T. M. Thiagarajan: T. M. Thiagarajan (Tamil: டி.  எம்.  தியாகராஜன் ) (28 May 1923 – 27 June 2007) was a Carnatic vocalist and musicologist from Tamil Nadu in Southern India.  He was awarded the Madras Music Academy's Sangeetha Kalanidhi in 1981.

Trichur V. Ramachandran: Trichur V. Ramachandran(born 1940) is a Carnatic music vocalist.  He was awarded the Madras Music Academy's Sangeetha Kalanidhi in 2012.  This is the prestigious award from the Madras Music Academy.

Pichu Sambamoorthi: Pichu Sambamoorthi (1901–1973) was an Indian musicologist, writer and the professor of musicology at the Sri Venkateswara University, Tirupati.  He was the author several books on music, including "A Dictionary of South Indian Music and Musicians", "Great composers", "South Indian Music", "Sruthi Vadyas (Drones)" and "Laya Vadyas: Time-Keeping Instruments".  He was awarded the Madras Music Academy's Sangeetha Kalanidhi in 1972.  The Government of India awarded him the third highest civilian honour of the Padma Bhushan, in 1971, for his contributions to music.  He was also a 1963 recipient of the Sangeet Natak Akademi Fellowship.

M. Chandrasekaran: Sangita Kalanidhi Dr. M. Chandrasekaran is an eminent Carnatic classical violinist from Chennai, Tamil Nadu, India.  He was awarded the Madras Music Academy's Sangeetha Kalanidhi in 2005.  Sri M. Chandrasekharan's connection with music was firmly established over 65 years ago, when he began playing the violin at the age of 11, after which he went on to accompany many stalwarts in the field of Carnatic music.  Having lost his eyesight at the age of two, he overcame his difficulty by music.  Deeply appreciative of the importance of not just the lyrics, but also its melody and bhava, the prolific violinist is known for his success in bringing out the subtlest of musical nuances.  He is also considered an expert in the laya aspects, recognizing and adapting to intricate rhythmic patterns with ease and grace.  Sri Chandrasekharan also presents vocal concerts, and sometimes sings along during his solo violin recitals.  He has composed various musical forms in different languages, and has travelled the world performing, enthralling audiences all over.  He often performs violin duet concerts with his daughter Smt.  G. Bharathi.  He has accompanied several stalwarts and doyens of Carnatic music.

Madras Music Academy: Madras Music Academy is one of the earliest established music academies in South India.  Before the concept of infrastructure was introduced to India in the early 1920s, it was a gathering for elite musicians simply called (and is still more commonly referred to as) Music Academy (Tamil: சங்கீத வித்வத் சபை, "sangeetha vidhwadh sabai"  ) It plays an important role in encouraging and promoting primarily the Carnatic Music Indian art form.  It played a vital role in the revival of the Indian classical dance form of Bharatnatyam in the 1930s when it faced near extinction due to a negative connotation caused by conservative societal standards.

Supporting paragraphs: T. M. Thiagarajan Sangeetha Kalanidhi
Answer: Carnatic Musician