"Bad Star Trek episodes" is how one director describes a certain unfortunate look in would-be intergalactic opera productions. The late Nikolaus Lehnhoff came perilously close to it in his Glyndebourne Tristan und Isolde but offered a coherent vision. Daniel Kramer, now ENO's Artistic Director, has a few "bad Star Trek episodes" and many good ideas that don't always join up or else outstay their welcome. Unevennness abounds: hideous costumes and makeup clash with Anish Kapoor's eventually brilliant designs, singing and conducting are only patchily inspired.

Wagner was never satisfied with Tannhäuser, and it’s not hard to see why. Essentially a study of the tension between sensual and spiritual love, it was composed at a time when, by his own later confession, he lacked the resources to deal properly (that is, improperly) with the sensual element, and even in any profundity – one might feel – with the spiritual. The piece went through numerous revisions, extensions, compressions, tinkerings of one sort or another.

Kenneth Hesketh: horae (pro clara) Clare Hammond (piano) (BIS)

A celebration of the power of words and music (leaving aside, briefly, that more troubling business about the Fatherland), Wagner’s Die Meistersinger von Nürnberg is a natural opener for the summer opera season. Art triumphs over all, but in David McVicar’s production it’s a triumph of peculiarly human complication – a victory that leaves a hero in tears, that crowns some of opera’s most reactionary stick-in-the-muds with laurels, and leaves us asking: did Eva really pick the right man?

Within the wounded, divided company of English National Opera – artists and administration still at loggerheads – the buzz is surprisingly positive. CEO Cressida Pollock does finally seem to be listening: union deputies from chorus and orchestra met the final candidates for the too-long-dormant role of Artistic Director. From what I gleaned last night after the final blazing performance of Brahms's A German Requiem under the best Music Director I've seen at ENO in my lifetime, Mark Wigglesworth, they liked what they'd heard from the new incumbent, Daniel Kramer.

Tim Albery’s 2010 production of Wagner's Tannhäuser is back for a revival at Royal Opera, featuring a different conductor and a nearly new cast, with one notable exception. The production itself is serviceable, visually coherent and with plenty of atmosphere. The sets, by Michael Levine begin with a replica of the Covent Garden proscenium arch in the Venusberg scene, which is then shown in progressive states of decay in the following acts. The Venusberg choreography, by Jasmin Vardimon, is modern and slick, as dynamic as it is sensual.

How ironic that English National Opera turned out possibly the two best productions of the year after the Arts Council had done its grant-cutting worst, punishing the company simply, it seemed, for not being the irrationally preferred Royal Opera. And while 2015 has been as good as it gets artistically speaking for ENO, 2016 may well see confirmation of the first steps towards its dismantling by a short-sighted management – for what is a great opera house without a big chorus or a full roster of productions, both elements under threat?

The few ensemble lapses and moments of insecurity during the first half of this concert had nothing to do with Richard Farnes’s conducting, or with the playing of an augmented Orchestra of Opera North. It’s in rude health; Farnes has refined and deepened the orchestra’s string sound, and the winds and brass are world-class.

If Omer Meir Wellber is making a bid for Andris Nelsons’s old music directorship in Birmingham, he could hardly have signalled his intentions more audaciously. This concert began with Wagner’s Lohengrin Prelude and ended with Brahms’s First Symphony – basically a surgical strike into the heartlands of Nelsons’s repertoire. And as soloist, he had the Latvian violinist Baiba Skride – an artist who was introduced to Birmingham by Nelsons and who appeared with the CBSO on disc and in concert throughout Nelsons’s tenure.

Castanets in Wagner? The imperfect Wagnerite will identify them in one place only: the Venusberg ballet music of the Paris Tannhäuser. The perfect variety will know that they’re also to be found in the overture and carnival scene of Das Liebesverbot (The Ban on Love). Would that the rest of Wagner’s second opera were as wacky, but it’s still something to find the 21-year-old composer grappling with the German equivalent of an opéra comique or a dramma giocoso.