Arguably the world's most influential radio DJ, John Peel has sadly passed away while on vacation in Peru. Redefining the medium for an incredible four decades, Peel consistently championed new music from up-and-coming Chicago bands — such as Shellac, Tortoise, Braniac, and Labradford — and gave them an outlet on his now seminal Radio 1 program. Pulling from a variety of genres, both new and old, Peel's uncompromising, independent aesthetic served as an inspiration to music fans everywhere. Tributes are being compiled here; you can also submit a request for the BBC to air your favorite Peel Session.