James Litton, Washington National Cathedral Choir, members, Erik Suter, Joanna Dabrowska, St. Albans School Madrigal Singers, Washington National Cathedral Choir, Elizabeth Robinson, Brent Flinchbaugh, Washington National Cathedral Madrigal Singers, Scott Hanoian, Justin Godoy, Charlotte Woolley, Morgan Whitmire, Blount Stewart, Peter Thompson, Rosa Lamoreaux, William Simms, Gleb Drobklov, William Lockhart, Claude Balbastre, Gleb Drobkov, Christine Buras, Vana Derderian & Chester Warner