10:32 p.m. - A11 - Sonic Fun House in the Atrium on Bay. At one point a gentleman in the audience (on the left) joins in. He sings a few notes and the performers try to imitate him. He's actually really good. A professionally trained singer from the sounds of it. After giving them a few easy notes to follow he launches into a complicated series which they manage to muff up. It was quite funny.