Lou Kohler, longtime frontman and co-founder of New York hardcore band The Sick of It All, has died after a two-year battle with esophageal cancer. He was 59 years old.
The band announced Kohler’s death in a statement shared on Instagram on Friday.
“It is with incredible sadness that we announce the passing of our brother Lou Kohler to our hardcore families around the world,” the group wrote. “The sense of loss we feel at this time is immeasurable.”
“We have lost a beloved friend and iconic frontman. Lou had the ability to lift everyone’s spirits at his shows with his smile and sarcastic comments, and wherever he played, he attracted people from every culture and every corner of the world.”
The statement continued: “This year would have been The Sick of It All’s 40th anniversary as a band, but Lou’s friendship, dedication and enthusiasm have remained steadfast throughout the years.”
Koller first revealed in June 2024 that doctors discovered a cancerous tumor in his esophagus that had spread to his stomach, forcing the band to cancel a European tour while Koller received treatment.
After months of chemotherapy, the rocker revealed in May 2025 that he was cancer-free. However, just a few months later, it was revealed that the cancer had returned.
“The very bad news is that the cancer has returned,” Kohler said in a video message at the time. “We will try to keep you as informed as possible. Thank you for your love and support.”
Fans and fellow musicians rallied around the singer throughout his illness, helping to raise money for his medical expenses through benefit concerts and fundraisers.
In the band’s memorial, Sick of It All thanked Kohler’s supporters for their support in his final years.
“Throughout Lou’s struggle over the past two years, you have helped make him feel so special and so loved,” the band wrote. “His fight is over and he can finally rest. Hopefully, somehow the beautiful and positive footprint he left on the world can still be seen and felt.”
Tributes quickly poured in on Instagram, including WWE star CM Punk, who wrote, “I love you Lou and SOIA. Thank you for being the soundtrack of my life. Sending you a hug.”
Singer-songwriter Chuck Regan also wrote, “Lou was a true pillar of the musical world to me and will never be forgotten,” while Pennywise guitarist Fletcher Drudge said, “There are no words, a true gentleman and a trailblazer. When I think of hardcore, Lou is the first person that comes to mind. I am grateful to have had the privilege of sharing the stage with him and the boys over the years. He was always an unforgettable presence on stage, and the best is still hanging from the stage.”
Meanwhile, Pennywise lead singer Jim Lindbergh wrote, “What a great performance and such a good human being. I’m devastated for your loss, for my family, and for all of us. I remember playing a show with you guys and hearing the power in his voice and thinking, ‘How am I going to live up to that?!!'” There will be many bro anthems directed at Lou now. Rest in peace brother and love to you all. ”
Born and raised in Queens, New York, Koller co-founded Sick of It All in 1986 with his brother Pete Koller and drummer Armando Majidi. Over the next four decades, the band became one of the defining acts of New York’s hardcore scene, releasing 12 studio albums and gaining a devoted following around the world.
