- Matthew Edwards, Jeffrey Smith, Benjamin Bachmann, The Grace Cathedral Choir of Men and Boys
- Frederick Swann, George W. Thomas, Louise Natale, Dennis Elliott, Kathryn Cowdrick, Robert Harley, The Riverside Choir, Jeanne Audrey Powers, Jane Weidensaul, Lawrence Benz, Judith Bachleitner, Dale Zurbrick, Placida Robinson, Francis F. Fisher, Jerry Brainard, Norma Barsness, Sandra Stone, Dale Bishop, William Rhodin, Anthony Korf, Albert Wilson, Raymond Kohere, Eugene E. Laubach, Ann Mackay, Robert Macdonald, John Walker, John Howell Morrison
- Christian Sidak, Scott Hanoian, Washington Symphonic Brass, members, Michael McCarthy, Erik Suter, Washington National Cathedral Choir of Men and Girls, Washington National Cathedral Choir of Men and Boys
- Thomas Foster, Beverly Hills All Saints' Church Choir, William Wood, Craig Phillips
