Orpheus Chamber Singers offering excellent recorded program online, for free Led by founding director Donald Krehbiel, the choir performed a mix of motets from the 16th and 20th centuries. Artistic director Donald Krehbiel and the Orpheus Chamber Singers lead the audience in a carol at Custer Road United Methodist Church in Plano on Dec. 14, 2017.(Anja Schlein / Special Contributor) COVID-19 restrictions have kept the Orpheus Chamber Singers, an acclaimed professional chamber choir in Dallas, from giving a live concert in over a year. But the ensemble has reached its devoted following by offering video recordings on its website. The latest performance, “Lamentations and Meditations,” was sung by 12 masked and socially-distanced voices in St. Thomas Aquinas Catholic Church. Led by founding director Donald Krehbiel, who’ll step down from his position in December, the 40-minute program mixed together 16th- and 20th-century motets for the Christian season of Lent and Holy Week.