Krishnakumar Kunnath, popularly known as KK, K.K. or Kay Kay, is a prominent singer in Hindi, Telugu, Tamil, Kannada and Malayalam films. KK has a broad vocal range and is considered as one of the most versatile singers of India. Some of his most popular songs are Tadap Tadap Ke, Khuda Jaane, Dil Kyon Yeh Mera Shor Kare, Sach Keh Raha Hai Deewana, and Tu Hi Meri Shab Hai.
His debut album Pal was released in April 1999. The album received a Star Screen Award from Screen India for Best Solo Album. His second album, Humsafar, was released nine years later, in January 2008. It belongs to the pop-rock genre and has a total of 10 songs.