The world of rock music is mourning the loss of Jack Russell, a member of the band Great White, who has sadly passed away at the age of 63. Jack was surrounded by his loved ones, including his wife Heather Ann and son Matthew Hucko, when he died on Thursday. His passing comes just a month after he was diagnosed with Lewy body dementia , a condition that severely affected his motor skills.

Great White shared the heartbreaking news of Jack's death in a statement posted on X, previously known as Twitter . "Our deepest condolences to the family of Jack Russell. We hope they take comfort in knowing Jack's incredible voice will live on forever.

His love for the fans and his sons went unmatched, as was his own love for rock music," they penned. TMZ reported that Jack's representative confirmed his cause of death as Lewy body dementia and multiple system atrophy. The band members also paid tribute to Jack, remembering him for standing by them through "the good and the bad".

They added: "All those wonderful years together will be held close to our hearts. It was a privilege and joy to share the stage with him - many shows, many miles, and maximum rock. In the studio, Jack was amazing.

", reports the Mirror US . "He always came ready to work. And work hard, he did.

Jack stayed until he got the best performance for each song. He brought the same excellence to every show. The consistency of his live performances were always beyond comparison.

" Tributes flooded in following the rising of J.