It's disappointing to see how quickly Jon has abandoned his stated "unaccompanied" focus--within the first week! Is it too challenging just to sing, without artificial support? Does he need to add something because his approach to these songs is too homogenous? If so, I'd rather have him introduce variety by spotlighting other unaccompanied singers. Stick to the program: no instruments! These songs survived decades, even centuries, without them.