Sing-a-bration 2011: Joy of Worship & Multi-Pub Sacred Reading Session -- A Choral Workshop event sponsored by Pender's Music Co. (Saturday, July 16th, 2011 | Lewisville Convention Center, Lewisville, TX). Clinicians: Joseph Martin (Shawnee Press) - Mary McDonald (The Lorenz Corporation) - John Purifoy (Hal Leonard) - Heather Sorenson (Shawnee Press).