India, July 26 -- The hardcore punk community is mourning the loss of Lou Koller. The longtime frontman of legendary New York band Sick Of It All, Koller died at the age of 61. The singer's death was confirmed by the band on July 25, prompting an outpouring of tributes from musicians and fans around the world.

Koller had spent the last two years battling esophageal cancer, a diagnosis he spoke about openly while keeping fans updated on his treatment and recovery.

Here's everything to know about Lou Koller, his cause of death and the legacy he leaves behind.

Who Was Lou Koller?

Lou Koller was best known as the voice of Sick Of It All, one of the most influential bands in the New York hardcore scene. Formed in 1986 in Queens, New York, ...