Broadway stars Matthew Morrison and Laura Michelle Kelly will join the Mormon Tabernacle Choir and Orchestra at Temple Square for “Music for a Summer Evening,” a concert held annually in conjunction with community-wide Pioneer Day celebrations. This special Broadway-themed concert will be held on Friday and Saturday, July 20 and 21, at 8:00 p.m. in the Conference Center and will be conducted by Mack Wilberg, music director of the Choir, and Ryan Murphy, associate music director.