Nee Romba Azhagey Irruke guest-singing the prelude and interlude portions of the song "Ini Naanum Naanillai" with Srinivas and Sujatha Mohan as the lead singers.

[3] Coming from a family well-versed in Western music (classical jazz), Sarathy started singing in choirs from a young age of four.

Her performances at Santhome – including devotionals in Latin and Franz Schubert's Ave Maria – elevated her to star status among Madras' church music circles.

Sarathy got a national recognition for her playback singing for a Hindi – Tamil bilingual film Yuva / Aaytha Ezhuthu in 2004 both directed by Mani Ratnam with music composition by A. R. Rahman.

Some of her notable works are for the films that include Mitr, My Friend, Anniyan, Polladhavan, Vallavan, Kana Kandaen, Don 2, Happy Days, Sainikudu, Cheluvina Chittara among others.