The Specials singer Neville Staple has talked about the"tragic loss" of the 21-year-old grandson being stabbed to death.
He had been found at the trunk of Club M at Croft Road and later died in hospital, West Midlands Police said.
A person arrested on suspicion of grievous bodily injury remains in custody.
Mr Staple, vocalist from the Coventry ska group, composed on Facebook on Saturday day:"We're really shattered to announce the tragic loss of my grandson Fidel (my daughter Melanie's son), who died today because of being assaulted with a knife at the road.
"we would like to thank the hospital surgeons & staff in UHCW University Hospitals Coventry and Warwickshire, who battled daily to try & rescue him..
"My lovely daughter Melanie & spouse Christine Sugary, all of the family and myself continue to be stunned by this catastrophe, but would love to thank you for the kindness & messages we've received."
The Neville Staple Band is supposed to play Coventry's Godiva Festival afterwards and the family said the series will proceed, with a concept about knife crime.
Mr Staple's wife, Christine, told the BBC:"Our daughter Melanie stated she needs us to still take action.
"Neville would like to dedicate the operation to Fidel and we wish to do just a tiny bit of stressing while we're there and utilize our profile to get something great by highlighting precisely what's happening in the moment with all the young folks and the things which are occurring using knives, and in some instances guns, on our roads.
"Fidel was just so handsome, so sweet, such a charmer, anybody who met him would constantly say'he is so lovely, what a beautiful boy'.
"But he'd turned into a man, he had attained 21, and that he had been just lovely, only amazing and I simply can not believe he's gone I actually can not.
"I believe we're still in shock , we are still fairly numb. We did lots of crying yesterday and also lots of stressing"
Another man, aged 23, had been found with stab injuries on Queen Victoria Road and stays in a serious but stable condition after surgery on Saturday afternoon.
Det Insp Harry Harrison, by the drive's homicide unit, said:"Regrettably another young guy has lost his entire life in a knife attack.
"We're aware that many men and women that were in the club in the time might have observed what happened and I'd recommend them to contact us with any information no matter how insignificant it might appear."