I am listening to Liza Minnelli Live at Carnegie Hall which I bought blind based on an ecstatic review back in the mid 80's. I had never seen her perform except for the movie Cabaret on network TV. Well, maybe it's because I'm a gay man, but I am listening to this concert and absolutely loving it. Ring Them Bells is my favorite as is the 25-minute Kander & Ebb medley of songs they specifically wrote for her. Wow. If you want to hear showmanship at its best, check out this double CD ($15 at Amazon).
