Indian playback singer and Carnatic musician. In a career spanning over four decades, she has recorded over 30,000 songs in various Indian languages, as well as foreign languages such as Malay, Latin, Arabic, Sinhalese, English and French. She is also known for her extensive history of collaboration with music composers like A. R. Rahman, Ilaiyaraja, Hamsalekha, M. M. Keeravani and with the playback singers K. J. Yesudas and S. P. Balasubrahmanyam over the years..