For the past 48 hours, I have been in Atlanta attending a conference called "The Singing Church," sponsored by the Candler School of Theology at Emory University.  In these past 48 hours, I have sung more church music than I ever imagined possible, I have experienced more different types of liturgy than I imagined existed, and I have had a chance to listen to and meet some people whose books have guided my thoughts and my learning and my transformation over the past three years. I have participated in five separate worship services, sung to guitar, piano, organ, drum, and hung (Korean string instrument that is a little like a…