The Concert Choir is Williams' largest choir, conducted and managed by Brad Wells. He is temporarily replaced by Rick Hoffenberg while on sabbatical.
The Choir sings large works from the concert repertoire (such as Carmina Burana and the Mozart Requiem), and goes on international tours in alternating years. In 2005, the group travelled to Bolivia, to sing in isolated mission towns and mountain bike down the World's Most Dangerous Road [1]. Two years before, they went to Sweden, Finland, and Estonia; and in 2001 to Italy.