Mahathi is a Carnatic musician and playback singer for film songs in Tamil and Telugu languages.

Mahathi underwent advanced Musical Training under the tutelage of Padma Bhushan “Sangeetha Kalanidhi" Madurai  T. N.

[citation needed] Mahathi started playback singing in 2003 with a duet, "Iyyaiyyo Pudichirukku", with Hariharan, under the music direction of Harris Jayaraj in movie, Saamy.

Mahathi presented the music based quiz program, "Aaha Paadalam" on Doordarshan Podhigai TV with Raaghav.

[4] In October 2005 she presented Ilaiyaraja's Live-in Concert organised by Jaya TV, "Andrum Indrum Endrum" with actor Parthiban.