When he was fourteen, C. R. Subbaraman noted the young boy's talent and hired him as a violinist for HMV.

In the 1940s, Ramamoorthy worked in Saraswathi stores where AVM Studio's boss, Avichi Meiyappa Chettiar, was a partner in the shop.

This led him to play violin for AVM's music composer, R. Sudarsanam, in some films.

T. K. Ramamoorthy, despite being an excellent musician with an orthodox Carnatic musical background, was a shy, modest and reserved person whereas M. S. Viswanathan was naturally talented, charming, forward and dynamic even if he lacked the similar background in Carnatic music.

[2] In addition, J. Jayalalithaa being the Chief Minister of Tamil Nadu, conferred the Thirai Isai Chakravarthy (Tamil: திரை இசை சக்ரவர்த்தி; "Emperors of the Cine Music") title in August 2012[3] and presented it to him, along with 60 gold coins and a new car.

[1] T.K.Ramamoorthy, in association with M.S.Viswanathan, composed music for over 100 films, starting with "Panam" in 1952 up till "Aayirathil Oruvan" in 1966, under the brand name 'Viswanathan–Ramamoorthy'.