After winning several inter-school competitions for carnatic and light music, Ganga was encouraged by her friends to try her luck in the film industry as a playback singer.
In June 1992, she went to Chennai with her father and met composer M. M. Keeravani, who gave her the first opportunity to make a voice recording, while dubbing a movie titled Aanenna Pennenna from Telugu to Tamil.
Later she joined A. R. Rahman’s chorus and initially worked in a group singing harmonies, before being given individual tracks.
[1][2] Her first lead song was released in 1994 which was in Malayalam movie, Pakshe, where she had sung a duet with K. J. Yesudas with music composed by Johnson.
[1] She later also received acclaim for her work with Mani Sharma, and notably sang the "Mambalam" song from Pokkiri (2007).