Friday's Rio Nightlife Pick - Circo Voador is going to be a funky mess of great music and intense musical rhythms. Orquestra Voadora are the hottest thing floating around Brazil right now, with their keen sense of funk and big- band beats. They have just returned from their European tour and it seems they made some new friends. They are playing host to Les Fines Polletes and Dumb and Brass, two similar-style bands from France. Expect to dance your tail off on Friday, because this show will be one big beat banging good time . . .