Lacuna Arts Ensemble is our most selective amateur performing group, singing challenging a cappella choral music with as few as 1–3 voices per part. Participants in this tuition-free vocal chamber music program receive 2–3 additional group coachings with artistic director Sven Edward Olbash in preparation for each Chorale concert. They are also expected to put in additional practice and rehearsal time on their own. To audition for Ensemble, singers should generally have sung with Chorale for at least one season. Ensemble rehearsals are scheduled in advance according to singers' availability.