Legend of Chicago House Music Frankie Knuckles has passed away according to sources.
I am devastated to write that my dear friend Frankie Knuckles has passed away today. Can't write anymore than this at the moment. I'm sorry.— David Morales (@DJDavidMorales) April 1, 2014
jesus man. Frankie Knuckles was so under-appreciated. he was the dj that dj's aspired to be. true dance pioneer.— Questlove Jenkins (@questlove) April 1, 2014
PHOTO: Getty Images