The Mercyhurst University Concert Choir joins a 95-voice choir to perform Sergei Rachmaninoff’s All-Night Vigil, a collection of 15 prayers, hymns and songs based on texts from the Russian Orthodox All-Night Vigil ceremony and sung in Church Slavonic, the liturgical language of the Orthodox Church. In addition to the Mercyhurst students, the choir includes the Chautauqua Singers of Jamestown, New York; members of the Church of Christ Savior Choir; members of the Erie Renaissance Singers; with soloistsAinsley Ryan, mezzo, and Brandon Miller, tenor. Rebecca Ryan, director of the Mercyhurst Concert Choir; Vladimir Gidenko, director of the Church of Christ Savior Choir; and Mercyhurst music graduate Andrija Andjelic, a graduate student at Duquesne, will share the conducting duties. Ryan says, “The extreme beauty and heavenly quality of this major choral work require only the human voice. It is entirely a cappella.” The concert is free and open to the public.