Number one rule of choir on stage: DON'T FIX YOUR HAIR! Broken so many times. Actually the rule is to have a good appearance, which covers many things like standing up straight and having an engaged expression. They don't blend very well, but have a good tone and support. They also appear to have good consonants, I blame most of my inability to understand on the recording as the voices and instrument are in equal volume - which I imagine they weren't in reality.