Conrad Osborne reviewed an earlier performance in the run for the UK Financial Times
... I certainly never expect to hear another Elektra who can sing through the entire piece at a very substantial, consistent level of beauty and volume, then turn on an extra 20 per cent or so for the final quarter-hour and end up clearly ready to run through it again. The constant mounting of one climax after another, the ease with which both the lyrical and dramatic high points are encompassed, the continuance of true singing tone throughout the score, and the cumulative impact of what seems a virtually untapped reserve - these are unique.
The interpretation is simple, and both vocally and dramatically it aims at an overall effect rather than at details and moments. The dancing is just a stalking about. But there is nothing embarrassing in it - it does not seem to me contrived, as did her Salome. No doubt she will grow more specific in time as she has in other roles which left an initial impression of blandness. Meanwhile, the Nilsson Elektra is a piece of singing no opera lover should miss.
She is aided and abetted by two other interesting singing actresses: Leonie Rysanek (Chrysothemis) and Regina Resnik (Klytemnestra). Miss Rysanek, who is perhaps the most erratic soprano on the international scene, was hardly recognizable as the singer who had seemed on the verge of vocal collapse on the opening night of "Die Frau ohne Schatten:" the voice's familiar heft and ring were back, capped by those excitingly alive top tones. And from a vocal standpoint there is no finer Chrysothemis to-day than an on-form Rysanek. Dramatically she overdid things wildly, flailing and staggering about: one expected her to take over Elektra's lines at any moment.
Resnik's Klytemnestra has long been familiar as one of the finest portrayals the Met has to offer, and it remains that... this is a splendid piece of work.
The men were James King (Aegisth, neither here nor there) and William Dooley (Orest, mostly there, for the voice is too light for the part). Thomas Schippers' conducting had moments of imbalance, but was hardly the vulgar piece of work some observers have made it out to be. "Elektra" ought to be loud and with these voices there is small danger of orchestral dominance. "
