Walter Parazaider, co-founder of the legendary rock band Chicago, has died at the age of 81 after battling Alzheimer’s disease. His daughter confirmed the news in an emotional message, writing: “My father, my hero, is gone,” and adding that “He went peacefully… There’s no more pain. No more struggle.”

Parazaider was far more than a musician—he was one of the creative forces behind Chicago’s unique identity. Born in 1945 in Maywood, Illinois, he grew up during a time of major musical change and was inspired by bands like The Beatles. His big idea was to blend rock with a horn section, something the band later described as central to their identity: “A rock and roll band with horns was Walt’s idea.”

In 1967, he co-founded Chicago alongside Peter Cetera, Terry Kath, Robert Lamm, Lee Loughnane, James Pankow, and Danny Seraphine. Beyond performing, he helped organize the group, booked early shows, and supported its development in the early years.

Chicago went on to become one of the most successful rock bands in history, producing timeless hits such as “If You Leave Me Now,” “You’re the Inspiration,” and “Hard to Say I’m Sorry.” Parazaider’s skills as a multi-instrumentalist—especially on saxophone, flute, and clarinet—became a key part of the band’s signature sound, including memorable performances like the flute solo in “Color My World.”

He remained with Chicago for decades, retiring from touring in 2018. The band was inducted into the Rock & Roll Hall of Fame in 2016, cementing their legacy in music history.

Following his passing, tributes highlighted his influence, with Warner Music calling him “a true master of woodwind instruments.” He is survived by his wife, JacLynn, his family, and millions of fans. As one tribute reflects, his music “will continue to live on every time a Chicago song plays.”