You could do much, much worse on this final Wednesday of August than have a cool drink at the bar while a light samba taps out by the windows. This is Sansom Street I'm talking about, not Ipanema, but hey, it'll do. Music critic-turned-bossa-nova sherpa Tom Moon's Ensemble Novo are doing one of their regular slots at Time tonight, and it may well be your last chance to truly feel that peak-level summer idleness you can already sense is being torn away.