<p>Walter Parazaider, a co-founding member and saxophonist for pop- and jazz-infused rock band Chicago, has died. He was 81.</p><p>The band confirmed Mr. Parazaider's death in a social media post on Wednesday.</p><p>"Chicago is heartbroken to share the sad news of Walter Parazaider's passing this morning," the band wrote, alongside an early-career photo of the woodwind musician.</p><p>"A Rock &amp; Roll band with horns was Walt's idea.