Everyone knows of President Barack Obama and First Lady Michelle Obama’s Chicago roots and how they proudly acknowledge their ties to the city. Their Chicago home still sits right in the heart of the south side of the city. It comes as no major surprise that the couple took the time out to write a letter to the family of the recently deceased house music legend, Frankie Knuckles. As most of us know, Frankie is often considered one of the major pioneers of Chicago house music. See the full letter below.