Staging Wagner’s epic four-part Der Ring Des Nibelungen is the greatest challenge that an opera house can face. The Met’s latest effort, staged by Canadian director Robert Lepage, has been taken out of the opera house and into cinemas all over the world, and is now available in an 8-DVD set. The live performances have taken a bit of a critical battering so how does the small-screen release stack up?

First of all, the positives: this is the best looking, best sounding and generally one of the best sung Ring Cycles that you will find.  The high-definition picture is breathtaking in its clarity, while the sound is beautifully engineered to give a wide, natural perspective. The singers have clearly all been miked and every word comes over loud and clear, regardless of stage position or volume of orchestra. The conducting is of a high level, too, with James Levine’s 40 years of experience paying dividends in Das Rheingold and Die Walküre, while Fabio Luisi is a solid substitute in Siegfried and Götterdämmerung.

Lepage’s brief was to produce something traditional enough to satisfy the Met’s conservative support base while utilising his reputation for visual wizardry to realise Wagner’s dream for the 21st...