His wife and family were shocked by the death that was "sudden and unexpected", according to a statement by Bumbery.
Megadeth paid a special tribute to Chris Cornell during a gig in Japan on Thursday night, hours after learning the Soundgarden singer had died.
Country star Zac Brown has also offered a heartfelt message to the man who joined the Zac Brown Band for 2005's Heavy Is the Head: "Chris Cornell touched so many & we were fortunate to have worked w/ (with) him", Brown tweeted.
The Mariners held a moment of silence for Cornell, who was found dead at age 52 in a Detroit hotel room after playing a concert in that city Wednesday with Soundgarden. Together with other Seattle natives Nirvana, Pearl Jam and Alice in Chains, the band - and Cornell's voice - would go on to define a sound that cherry-picked elements of punk and metal and distorted them into a distinctive brew all their own.
"It's really sad that he could never find peace in his life", said Chad White, who came to the art display with his young son Ignatius to honor Cornell.
Recognising the unusual feeling that comes with grieving a person we loved despite never having met, he urged that we should all have a "green light to grieve those we don't know personally, as well".
Dave Mustaine and his bandmates halted their show in Tokyo to salute the rocker, who hanged himself in a Detroit, Michigan hotel room. "And if you know the words, sing with me".
The group formed in Seattle in the 1980s at a time when the city was far off the beaten path of the musical mainstream and there were few venues for smaller artists to play original material. Cornell leaves a legacy as frontman for iconic alternative bands including Soundgarden, Audioslave and Temple of the Dog. "There's no doubt that Soundgarden's music is very dark and melancholy at times".