Louisville's hippest classical music chamber ensemble wheels their harpsichord into Willow Park this week for an impromptu free performance. Bourbon Baroque is known for staging the music of the 17th and 18th centuries in unorthodox performance spaces to encourage a more social approach to classical music. The company will announce their 2014-15 season at the free concert, 7 p.m. in the gazebo at the small Cherokee Triangle neighborhood park. The impetus for this last-minute, pop-up concert is the temperate forecast for mid-week, so the line-up and program have yet to be determined. But in an email today, artistic director John Austin Clark promises "lite fare of the Baroque, perfect for a Summer's eve." Patrons are encourage to bring their own blankets, chairs and picnic dinners. Alas, the bourbon itself will need to stay at home, per Metro Parks regulations.