The leader of our college singing group directed the group and accompanied us on the piano at the same time, skillfully balancing those responsibilities. At the close of one concert, he looked particularly weary, so I asked him if he was okay. He responded, “I’ve never had to do that before. Then he explained. “The piano was so out of tune I had to play the whole concert in two different keys—my left hand playing in one key and my right hand in another!” I was blown away by the startling skill he displayed, and I was amazed at the One…