Singer Krishnakumar Kunnath popularly known as KK was in the midst of a live performance at South Kolkatta when he felt "unwell" and was videoed being rushed out of the venue. The 53 year old, who has given many hit songs across Indian languages went back to his hotel where his condition reportedly deteriorated and he suffered from chest pain. KK died on the way to CMRI hospital, leaving the whole nation in shock. 

#WATCH | Singer KK died hours after a concert in Kolkata on May 31st. The auditorium shares visuals of the event held some hours ago. KK was known for songs like 'Pal' and 'Yaaron'. He was brought dead to the CMRI, the hospital told.

Video source: Najrul Manch FB page pic.twitter.com/YiG64Cs9nP

— ANI (@ANI) May 31, 2022

Police have registered a case of unnatural death and a post-mortem report is expected soon. Many have also claimed the poor air-conditioning and over-crowing at the Nazrul Manch auditorium, where KK was performing for a college fest, as reasons. KK is survived by his wife Jyothi and two children - a son and daughter.

From Prime Minister Narendra Modi to opposition leader Rahul Gandhi, celebrities from all over the nation mourned KK's shocking demise. The Indian music fraternity came out in full force to express their grief and even celebrities from down South took time to reminisce fond memories with the singer. [KK has extensively worked in Tamil, Telugu among other South-Indian language movies]. 

Black year for Indian music. Lata didi, bappi da, sidhu paaji and now KK sir. These losses.. all of them feel so personal.

— ARMAAN MALIK (@ArmaanMalik22) May 31, 2022

My “Uyirin Uyire” passed away. RIP Singer KK. What a shocking news to hear when the whole world is praising his last song “Konji Konji”. I am completely shattered and my condolences to his family and friends. @jdjeryofficial @thinkmusicindia @SonyMusicSouth

— Harris Jayaraj (@Jharrisjayaraj) May 31, 2022

Heartbroken at the shocking demise of KK. Gone too soon! A fabulous singer and a great soul.He sang ‘Daayi Daayi Daama’ from ‘Indra’ for me. My heartfelt condolences to his family & near and dear ones. May his soul rest in peace! #RIPKK

— Chiranjeevi Konidela (@KChiruTweets) June 1, 2022

I am unable to wrap my head around this news. Numb. #KK Why! This is too hard to accept! Heart is shattered in pieces.

— Shreya Ghoshal (@shreyaghoshal) May 31, 2022

It’s been a sad week for the music community of our Country with Sidhu Moose Wala & now KK.

Life is unpredictable & we never know what the next minute holds, you will be missed KK

— Raja yuvan (@thisisysr) May 31, 2022

Rest in Peace my friend. Such a terrible loss. KK’s magical voice and music will resonate with us forever. pic.twitter.com/O6HUOTfUQH

— Santhosh Narayanan (@Music_Santhosh) May 31, 2022

Lost a magnificent singer of our times and so suddenly. Condolences to his family and close ones. #KK🙏

— Virat Kohli (@imVkohli) June 1, 2022

A voice and talent like no other.. They don't make them like him anymore. Working on the songs he sang was always that much more special. You will always be in our hearts KK and live eternally through your songs. RIP Legend KK #ripkk pic.twitter.com/7UcYnx1WDy

— Emraan Hashmi (@emraanhashmi) June 1, 2022

KK... not fair man. Not your time to go. This was the last time we were together to announce a tour together. How can you just go??? In shock. In grief. A ear dear friend, a brother is gone. RIP KK. Love you. pic.twitter.com/lCdwIRf3W6

— Mohit Chauhan (@_MohitChauhan) May 31, 2022

Saddened by the untimely demise of noted singer Krishnakumar Kunnath popularly known as KK. His songs reflected a wide range of emotions as struck a chord with people of all age groups. We will always remember him through his songs. Condolences to his family and fans. Om Shanti.

— Narendra Modi (@narendramodi) May 31, 2022

Krishnakumar Kunnath, fondly known as KK, was one of the most versatile singers of the Indian music industry. His soulful voice gave us many memorable songs.

Saddened by the news of his untimely demise last night. My heartfelt condolences to his family & fans across the world. pic.twitter.com/7Es5qklcHc

— Rahul Gandhi (@RahulGandhi) June 1, 2022

Extremely sad and shocked to know of the sad demise of KK. What a loss! Om Shanti 🙏🏻

— Akshay Kumar (@akshaykumar) May 31, 2022

One and only . KK 😔 .

— Jubin Nautiyal (@JubinNautiyal) May 31, 2022

Deeply saddened to know about the sudden demise of noted playback singer Krishnakumar Kunnath, popularly known as KK. Extending my heartfelt condolences to his family. May his soul rest in peace. 🙏#KrishnakumarKunnath #KK #KSChithra pic.twitter.com/nUVC2QWslv

— K S Chithra (@KSChithra) June 1, 2022

In utter shock. Just heard about KK . Someone please tell me it's not true

— Pritam (@ipritamofficial) May 31, 2022

The tears won't stop. What a guy he was. What a voice, what a heart, what a human being. #KK is FOREVER!!!

— VISHAL DADLANI (@VishalDadlani) May 31, 2022

Yaad aayenge yeh pal... #KK pic.twitter.com/7nB1RMfAaG

— Satish Acharya (@satishacharya) June 1, 2022