There is a great Oompa band quartet? I think there were 4 or 5 members. They play great beer hall music and encourage everyone to sing along and participate. Ticki Tacki..Ticki Tacki..Hoy! Hoy! Hoy!
They also do bell-ringing (they are really good), and then they play polka's and invite everyone down on the floor to dance. It is a really good time, you will enjoy it.