Goucher faculty Elisa Koehler and Rhoda Jeng perform a program at 8p.m. in Merrick Lecture Hall, featuring Ponchielli’s Trumpet Concerto and Eric Ewazen’s Variations and Fugue on a Theme by Brahms for flugelhorn and piano. Elisa Koehler will also talk about her recent book, Fanfares and Finesse: A Performer’s Guide to Trumpet History and Literature.