India’s lead playback singer Krishnakumar Kunnath popularly known as KK died of a heart attack. According to the sources, the 53-year-old singer was performing at a concert in Kolkata. Post-performance, KK felt unwell and rushed back to his hotel. KK was then transferred to a nearby hospital. The popular singer has recorded songs in a variety of languages, including Hindi, Tamil, Telugu, Kannada, Malayalam, Marathi, Assamese, and Bengali.