Thousands of years ago, before people invented instruments, folks used to make songs entirely with their mouths. The sounds that emanated from these musicians' lips were not composed of words and phrases, but rather instrumental sounds and honed noises. There are still a few vocal groups around and they're called a cappella ensembles. One of the more prevalent groups like this is called Naturally 7. There are seven members in the group and all of them call New York home. The band has supported notable acts like Michael Bublé as well as George Benson, and the group is known for its impassioned live performances.