Rani was best known for the song that was actually sung by a woman who is from what South Indian state?
Rani (Tamil actress):  She is best known for the song "O Podu" from "Gemini", sung by Anuradha Sriram and picturised on her; she is often referred to as "O Podu" Rani. Anuradha Sriram: Anuradha Sriram (born 9 July 1970) is an Indian carnatic and playback singer who hails from the South Indian state of Tamil Nadu.
Tamil Nadu