Back in February, OnMilwaukee.com told you that Banshee Music -- the music branding and publishing firm that grew out of GMR Marketing in New Berlin -- is creating a soundtrack to the biggest event in the world of horse racing: The Kentucky Derby. Now, the Derby is only a couple weeks away and "Party Up at the Downs: The Official Party Playlist of the Kentucky Derby, Vol. 1," is ready. The 135th Run for the Roses takes place May 2 at Churchill Downs in Louisville.