I can't believe that they would stand on national television and arogantlly say that YALE invented acapella. Was not only arogant....but offensive in SOOOOOOOOOOO many ways! Have they ever heard of a lil Group called the "FISK JUBILEE SINGERS"????? Who started out in the mid to late 1800's Please....DO your homework before you go braggin about something as big as singing acapella! You lost my vote with that alone!