It seems an almost indecent luxury to have heard two top mezzos in just over a week with so much to express, backed up by the perfect technique and instrument with which to do so. Georgian Anita Rachvelishvili with Pappano and the Royal Opera Orchestra the Friday before last only had to hold the spell through a Rachmaninov sequence in the middle of an all-Russian concert.

The power of seeing was the bedrock of John Ruskin’s philosophy. In the bicentenary of his birth, a revelatory exhibition at Two Temple Place in London opens out the idea and makes it manifest through both his own work and the treasures of his collection.

Berlioz called it a "concert opera". His telling of the Faust story is in scenes and highly theatrical, but a bit of a challenge to put on in the theatre, with its marching armies, floating sylphs, dancing will-o’-the-wisps and galloping horses. It seems he expected it to be a kind of giant cantata, and that’s the way the Hallé and Sir Mark Elder perform it.

It took the best part of six episodes, but we got there in the end: the reason David Oyelowo accepted the confusingly underwritten part of Inspector Javert in BBC One’s adaptation of Les Misérables was finally revealed.

Well, I didn’t expect that – and judging from the way the rest of the audience reacted, nor did anyone else. After Cristian Măcelaru slammed the City of Birmingham Symphony Orchestra full speed into the final chord of Vaughan Williams’s Fourth Symphony, there was a stunned silence, broken by gasps. And then cheers, as a smiling, visibly drained Măcelaru gestured back at the orchestra with both thumbs up.

Harpers on the undeniably offensive aspect of Wagner the man might question attending a concert performance of his second Ring opera on World Holocaust Day. Fortunately there's nothing anti-semitic to be found anywhere in Die Walküre.

No one worried about melting icecaps and homeless penguins when Vaughan Williams wrote his score for the film Scott of the Antarctic around 70 years ago. (They do now, as a new music theatre piece by Laura Bowler to be premiered by Manchester Camerata next week will show). It was the challenge of the frozen continent and a heroic effort to reach its heart that counted.

Prince Yeletsky, one of the shortest roles for a principal baritone in opera but with the loveliest of arias, looms large in Stefan Herheim's concept of The Queen of Spades.

In a telling scene midway through Colette, our lead is told that rather than get used to marriage, it is “better to make marriage get used to you.” In this retelling of the remarkable Colette’s rise, it is evident she did much more than that; by the time she was done, all of Paris was moulded in her image, and in the hands of Ke

There’s no singing, no Hugh Jackman and no Anne Hathaway, and the dolorous tone of Andrew Davies’s new adaptation of Victor Hugo’s sprawling novel is established in the opening scene. It’s the aftermath of the battle of Waterloo in 1815, and the ruffianly Thénardier (Adeel Akhtar) is picking his way through the carpet of bloodied corpses covering the battlefield, rifling their pockets for valuables.