Krishnan Nair Shantakumari Chithra (born 27 July 1963) credited as K. S. Chithra or Chithra is an Indian playback singer and Carnatic musician. She has recorded more than 25,000 songs in various Indian languages including Malayalam, Telugu, Tamil, Kannada, Hindi, Bengali, Oriya, Punjabi, Gujarati, Tulu, Rajasthani, Urdu, Sanskrit, and Badaga as well as foreign languages such as Malay, Latin, Arabic, Sinhalese, English and French. She is also known for her extensive history of collaboration in the songs with Music Composers A.R. Rahman, Ilaiyaraja, M. M. Keeravani and with the playback singers SP Balasubrahmanyam and K J Yesudas over the years. She is also known mostly for her sweet and melodious voice for which she is fondly called as Melody Queen and Nightingale of South India.