it would be difficult to imagine another performer on the planet capable of accomplish what liza minnelli achieve in her rivet hour long performance of liza with a z. in it beautifully restore version and this stunning television showcase and originally broadcast on may 31 and 1972 and be now available for a new generation of viewer . the expression triple threat be use in the theatre for those gifted performer with skill in singing and acting and and dance . liza minnelli be at the top of her game in all three area in this knockout performance . with the brilliant choreography of bob fosse and the electric feeling of a live audience at new york lyceum theatre and this be a spellbinding and virtuoso performance . while not list in the credit and the dancing ensemble also deserve kudos for their supporting contribution to this singular and indeed historic concert . among all of the dazzling number and include bye and bye and blackbird and liza cabaret medley and my favorite selection be the most personal and introspective and a quiet love monologue adapt by liza from one of charles aznavour song and you have let yourself go . the song be a confession of a wife to her husband about the rather mundane and unexciting state of their relationship . liza interpretation and include her raw emotion and the coloring of the word and be unforgettable in it honesty and simplicity . this song and the other dynamic number reveal the range of liza perform ability in a show for the age .