Krishnakumar Kunnath popularly known as KK, K.K. or Kay Kay is an Indian singer who sings for Hindi, Telugu, Tamil, Kannada and Malayalam Marathi, Bengali language films. KK is noted for his clear, soothing voice; broad vocal range, noteplay and is considered one of the most versatile singers of India.
Born in Delhi to Hindu Malayali parents C. S. Nair and Kunnath Kanakavalli, Krishnakumar Kunnath was brought up in New Delhi. KK sang 3,500 jingles before breaking into Bollywood. He is an alumnus of Delhi's Mount St Mary's School and graduated from Kirori Mal College, Delhi University. He sang in the "Josh of India" song for the support of Indian Cricket Team during Cricket World Cup of 1999. This song featured members of the Indian Cricket Team
KK married his childhood sweetheart Jyothy in 1991. His son Nakul Krishna Kunnath sang a song "Masti" from his latest album Humsafar with him. KK also has a daughter named Tamara Kunnath who, according to KK, loves playing piano. KK says that his family is his source of energy.