One of the most beautiful pieces of music composed in recent years has to be Hallelujah by Leonard Cohen. I love hearing him sing it; I love hearing KD Lang sing it. Recently, however, I was introduced to the version by the Canadian Tenors, and it blew me away.
http://www.youtube.com/watch?v=LTx8IGPwrIk (turn up your volume)
The reason this version grabs my heart is the perfect, pitch-perfect, harmonies. In my own personal experience, nothing is more exciting or inspiring than singing in harmony. Why I haven't found a way to do it more frequently is a topic to ponder at another time.
Hearing this beautiful arrangement, sung by four tenors, reminds me of how it can feel to live harmoniously, and how painful it is to live "off." I have had the privilege of singing in multiple choral groups and well remember how often the director would stop us mid-note to declare, "whoa, whoa, we are off...let's try it again." The huge pay off for all the practicing and rehearsing came when we could hear for ourselves that we were "on," blend our voices and soar with the music.
I think Life requires a lot of rehearsing; learning to hear the Music is no easy task, much less finding and mastering our place in the Choir. But I gotta tell ya, nothing is more satisfying, healing, and inspiring than the actual experience of knowing, however briefly, that you are "on."