The Fifth Note

Have you ever heard of a "ringing chord?"  According to what I heard on television tonight, it is a chord used by a barbershop quartet to create the audio illusion of a fifth note from a chord.

Four notes combined in such a way as to sound like more than they are alone. 

Is church like that sometimes?  When it is at its best, does the song the Church creates (figuratively) amount to more than our voices raised in solo?  Isn't it true that we can do more together than each of us alone?