[1] A carnatic musician & playback singer , Mahathi is a child prodigy who started Identifying classical ragas when she was 1.5 years old.

Lalitha & Gayatri at trivandrum, Underwent advanced musical training from Sangeetha Kala Acharya Late Mangad Natesan & Padma Bhushan Awardee Madurai Shri T N Seshagopalan.

[3] 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.

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