Q: Passage: The song's first verse and chorus are recited annually at the Kentucky Derby. Colonel Matt Winn introduced the song as a derby tradition. As early as 1930, it was played to accompany the Post Parade; the University of Louisville Marching Band has played the song for all but a few years since 1936. In 1982, Churchill Downs honored Foster by establishing the Stephen Foster Handicap. The University of Kentucky, University of Louisville, Murray State University, Eastern Kentucky University, and Western Kentucky University bands play the song at their schools' football and basketball games.

Question: Based on this passage, who plays my old kentucky home at the derby?
Let's give stream of consciousness below
The important part for answering this question is: As early as 1930, it was played to accompany the Post Parade; the University of Louisville Marching Band has played the song for all but a few years since 1936. So the answer is the University of Louisville Marching Band.