sentences:  The opening "Kyrie Eleison" begins with only one choir of eight voices; the "Christe Eleison" uses two choirs, totalling 16 voices; and the return of the "Kyrie" brings in yet another choir, totalling 24.The full 40 voices sing together for the first time in the "Gloria", at the words "Glorificamus te" (we glorify Thee), presenting the work's first climax.Textural contrasts abound.