Bollywood famous Singer Krishnakumar Kunnath, popularly known as KK, who was in Kolkata for a concert, died on Tuesday evening (May 31) at the age of 53. The playback singer collapsed after the concert and was rushed to a private hospital in the city. PM Narendra Modi has expressed grief over the untimely sad demise of the famous singer. Watch this episode of Nonstop 100.