Philip Barnes conducts the Saint Louis Chamber Chorus in "Wonder Upon Wonder Will Arrive to Me,"
the third concert of the ensemble's 57th season, on Sunday, December 23. The a cappella chorus will perform three major works to explore the wonder of the mystery of Christ's birth including Spanish Renaissance composer Tomas Luis de Victoria's "Missa O Magnum Mysterium," a series of motets for the Nativity and the Epiphany by French composer Francis Poulenc and another setting of "O Magnum Mysterium" by Sir Maxwell Davies.