KEY WEST â Zack Seemiller may hold the local record for the fastest song ever composed. âIâm part of you / youâre part of me / maybe the best part / youâre harmony.â Those are some of the endearing lyrics to his favorite song, âHarmony,â which Zack Seemiller wrote to his daughter. He said that song came to him in less than a minute. âIâve never not had music in my life,â he said. Seemiller, who defines himself âas an entertainer before anything else,â grew up in Pittsburgh where music was a part of his life from the beginning. He even recalls singing on long car rides as a young boy on his way to visit various family members at their houses.