West Chester University Concert Choir, with orchestra and faculty soloists, will present two performances of John Knowles Paine's rarely heard 19th-century American masterwork, the Mass in D.  The performances, led by David P. DeVenney, are Friday, February 10, 2012 at 7:30 p.m., and Sunday, February 12, 2012, at 3:00 p.m.  Both performances are in Madeleine Wing Adler Theatre, Swope Music Building, 817 S. High St., West Chester, Pa.  Admission is free, although a free-will offering will be taken.