Cornell's death was "sudden and unexpected", Bumbery said.
Cornell also collaborated with members of what would become Pearl Jam to form Temple of the Dog, which produced a self-titled album in 1991 in tribute to friend Andrew Wood, former frontman of Mother Love Bone. The band issued another full-length, Revelations, in 2006 and split up the next year, prompting Cornell to return to his solo career.
In 2001, Cornell joined with three former members of Rage Against the Machine to form Audioslave.
Absolutely shocking and tragic news, as Chris Cornell suddenly died last night (May 17) at the age of 52 following Soundgarden's performance at the Fox Theatre in Detroit.
He formed the grunge band "Soundgarden" alongside guitarist Kim Thyail and bassist Hiro Yamamoto in 1984, best known for their Grammy Award-winning singles "Black Hole Sun" and "Spoonman".
The group disbanded in 1997 and released a greatest hits compilation the same year.
"It was a long slow slide and then a long slow recovery, but there was self-discovery too", Cornell told the Mirror in 2012 about his battle with alcoholism.
Audioslave disbanded in 2007, but Cornell and Soundgarden reunited in 2010 and released the band's sixth studio album, "King Animal" in 2012. Their most successful single, "Like a Stone" released in 2003. Part of that, of course, is Cornell's "great vocal melodies".
In 2015, Cornell proved that he can still hit the high notes easily. The album received positive reviews with the over 10.5 million records sales in the USA as of 2012.
In interviews, Cornell discussed his past struggles with alcohol and the impact of his friends' deaths from substance abuse. He's previously been married to Susan Silver, sometime artist manager for Soundgarden and Alice in Chains, and had a daughter with her, Lillian Jean, in 2000.