It is clear that Diana Krall is working here with some very fine musicians who play with real commitment, confident that they can rely on each other. It makes for a propulsive, energetic and memorable performance. But the timing is subtle and exacting. Some systems smear, for example, piano and percussion which can sound disconnected as if, once again, the performers are not paying proper attention. It’s the difference between an unforgettable night out or a so-so one, the sort where you might not want your money back but you won’t be talking about the gig for years afterwards.