Organ music of the United Kingdom is the theme of this year’s Showcase Concert. Performers Pamela Decker, David Gay, and Ji Sun Lee will present music by George Frideric Handel, Edward Elgar, Healey Willan, Ralph Vaughan Williams, George Shearing, Percy Whitlock, and Charles Stanford. Favorite pieces include “Nimrod” from Elgar’s Enigma Variations, Vaughan Williams’s “Rhosymedre,” and Stanford’s Six Short Preludes and Postludes. Refreshments in the courtyard will follow the concert.