Smash Mouth former frontman Steve Harwell has died aged 56, it has been announced.
In a statement, Hayes added: "Steve Harwell was a true American Original. A larger than life character who shot up into the sky like a Roman candle.
"Steve should be remembered for his unwavering focus and impassioned determination to reach the heights of pop stardom.
"And the fact that he achieved this near-impossible goal with very limited musical experience makes his accomplishments all the more remarkable.
"His only tools were his irrepressible charm and charisma, his fearlessly reckless ambition, and his king-size cajones.
"Steve lived a 100% full-throttle life. Burning brightly across the universe before burning out. Good night Heevo Veev.
"Rest in peace knowing you aimed for the stars, and magically hit your target. He will be greatly missed by those who knew and loved him."
Harwell retired from the band two years ago with the group now touring with new vocalist Zach Goode.
During his time in the group, they released seven studio albums including their 1997 debut, Fush Yu Mang, which contained the hits Walkin' on the Sun and a cover of funk band War's Why Can't We Be Friends?
Their smash hit, All Star, from their 1999 follow-up Astro Lounge emerged into popular culture following multiple appearances in films including 2001 animation film Shrek.
The song also earned them a Grammy nomination for best pop performance by a duo or group with vocal.