Jack Russell, the iconic lead singer of the '80s metal band Great White, has passed away at the age of 63.

The lead singer of the 1980s metal band Great White, Jack Russell, has passed away at the age of 63.

Russell's official Instagram account announced the loss of his beloved Jack Patrick Russell on Thursday with a statement that reads, "With tremendous sadness, we announce the loss of our beloved Jack Patrick Russell - father, husband, cousin, uncle and friend."

Russell, who passed away peacefully with his loved ones present, was cherished for his quick wit, infectious enthusiasm, and indelible impact on rock and roll.

Russell did not immediately respond to Planet Chronicle Digital's request for comment.

K. L. Doty, the author of Russell's biography, told Planet Chronicle Digital that Russell trusted her with his life story. They started out as acquaintances but became fast friends due to her role as his biographer. Russell had to be candid with her about his past, which required a lot of trust on his part. Doty is honored to have had his trust and couldn't have done it without him. Russell lived his life, and Doty wrote his biography. She will always love Russell as her friend.

Russell, who joined the band in 1981, announced in July that he had been diagnosed with dementia and multiple system atrophy (MSA) and would no longer be touring.

"I am not able to meet my expectations and yours, Russell shared on Instagram on July 17. "Words cannot convey my appreciation for the numerous years of recollections, affection, and encouragement. Thank you for enabling me to pursue my passions. You have made my existence a marvel."

The Mayo Clinic states that MSA can lead to a loss of coordination and balance, as well as slow movements and changes in speech, and may also result in a loss of control over other bodily functions.

The news of his death prompted fans to share their memories and express gratitude for his talent.

"One of the greatest singers in one of the greatest bands of all time," one fan mourned. "Rest in peace, your legacy will endure forever."

""I'm glad that you finally found your soul mate in Heather," another commented. "Your spirit is no longer trapped in the torment of affliction," they added. "As much as my heart hurts, I will never see a pack of Marlboro light 100s without smiling," they said. "My condolences to your family," they concluded."

After the news of his passing, Great White posted a statement about it on their Instagram account.

"The family of Jack Russell will find solace in the knowledge that his remarkable voice will endure forever," the statement began.

"How do you feel about someone who was with you throughout your incredible journey, both the good and the bad? We choose to let the music fill in the gaps. Those incredible years we spent together will forever remain dear to our hearts."

In 2003, a Rhode Island concert saw Russell and the band involved in a fire that was ignited by pyrotechnics. The fire resulted in the death of 100 people and injuries to more than 200, as reported by The Associated Press. Ty Longley, the Great White guitarist, was among the victims who perished in the tragedy.

In 2010, Russell spoke to The Roanoke Times in Virginia about the "horrible tragedy" that had occurred. He expressed his wish to go back in time and undo it, and lamented that there was nothing he could have done to prevent it. Russell stated that the tragedy had come unexpectedly, and that one could not predict or prevent it. He encouraged people to pick themselves up and move on, accepting whatever life throws their way.

In 1989, Great White's greatest success was with the song "Once Bitten, Twice Shy" from their album, while Russell's solo hit, "Rock Me," gained popularity.

Russell's family, including his wife Heather Ann Russell, son Matthew Hucko, and numerous other loved ones, will always remember him.

This report was contributed to by Lauryn Overhultz of The Associated Press and Planet Chronicle Digital.