As you all know, Frankie Knuckles passed away recently. The man was an absolute legend who helped define house music what it is today. A number of days ago, David Guetta had a concert in Chicago. During his concert, he decided to take a moment to honor the fallen legend and pay tribute to everything he has done. Guetta says that he started to DJ at the age of 14. The first Chicago influenced records purchased by Guetta is where the biggest pioneer was Frankie Knuckles. Check out the video from his concert.