Lou Koller, the longtime vocalist and co-founder of New York hardcore band Sick of It All, has died at 59 after battling esophageal cancer.
The band confirmed his death in a statement, remembering Koller for his energy, loyalty and lasting connection with fans around the world. His voice and stage presence helped define Sick of It All’s sound across a career that lasted nearly four decades.
Koller publicly shared his cancer diagnosis in 2024, forcing the band to cancel touring plans while he began treatment. He later announced that he had been declared cancer-free, but the disease eventually returned.
