The Voice is a Voice not VOICES.
Contesents are judged on there voice,working hard and long to sound good.A duo or treo should
be better with all the different tones to blend together. That is not fair. The producers need to make rules for a Voice. Having a Voice is talent and using 2 or 3 voices to sound good is not a talented voice. My family & I are not watching a show that says the best best voice wins