Patrick Marber’s powerful debut about gambling men is 30 years old, born as the Eighties entrepreneurial boom was starting to sour but before poker become a game for mathematical whizz kids. What it reveals as it maps the male psyche seems as pertinent as ever. 

When Giuseppe Torelli made the journey from his birthplace of Verona to Bologna in the late 17th century, the trumpet was still seen as something of a brash outsider, suitable for military displays but not for sophisticated music ensembles. Within decades, it would seem perfectly natural for both Vivaldi and Bach to write major works featuring the trumpet.

Fragile egos abound. An older person (usually a man) has to bring the best out of the stars, but mustn’t neglect the team ethic. Picking the right players is critical. There’s never enough money, because everything that comes in this season is spent on the next. The media, with a sneer never too far from the old guard and its new version alternately snapping and fawning with little in between, has to be placated.

Mountainish by Zsuzsanna Gahse is a collection of 515 notes, each contributing to an expansive kaleidoscope of mountain encounters. Translated from the German by Katy Derbyshire in Prototype’s English-language edition, a narrator travels in the Swiss Alps across disparate fragments of prose, converging occasionally with five central characters.

I came to Isata and Sheku Kanneh-Mason’s Wigmore Hall recital on Saturday armed with a certain degree of scepticism. Not about the siblings’ stupendous talent and technique – their manifold achievements speak for themselves – but about the popular idea that family connections make for closer, more cohesive music-making. 

Opera North have recently pioneered a way of presenting some big works which they call “dramatic concert stagings”, performing in concert halls as well as theatres, with the orchestra on the platform behind the singers and a minimalist set, and the principals in present-day costumes symbolic of characters’ type.

Some have had video projection as a backdrop, but it’s also been dispensable where necessary. This one has none, but the concept is much more than a concert performance and completely justified by its impact in theatrical terms.

Transcendence is everywhere in Mahler’s most ambitious symphony, from the flaming opening hymn to the upper reaches in the epic setting of Goethe’s Faust finale. You’d think no visuals could match the auditory phantasmagoria, just as dance, music and design flunked the essence of Paradiso in the Royal Ballet’s The Dante Project. Mahler does compose a kind of concert opera in Part Two, though; sound, movement and image accorded well.

The blurb on the front of the double-CD set The Hamburg Repertoire says it collects “The original recordings of songs performed by The Beatles on stage in Hamburg.” Disc One opens with Little Richard’s “Long Tall Sally.” Disc Two ends with Chet Atkins’ version of the “Theme From ‘The Third Man’.”

“Let the music guide your imagination” was never going to be the slogan of the Southbank Centre’s Multitudes festival. Its 13 events offer parallel visions, intended in the case of Ravel’s Daphnis et Chloé (a shared project between the LPO and Australian dance company Circa I regret missing), not so in Shostakovich’s Tenth Symphony: as that masterpiece begins to be freed of its Soviet-era load, William Kentridge shackles it again on his own brilliant terms.

Back in 2009, there were Ben and Wystan on stage (Alan Bennett’s The Habit of Art). Last year came Ben and Master David Hemmings (Kevin Kelly's Turning the Screw), followed by Ben and Imogen Holst according to Mark Ravenhill. That RSC Swan production is now playing in the Richmond round. It grips, thanks to extraordinary performances by Samuel Barnett and Victoria Yeates, and taut dramatic structure, but how deeply is it rooted in truth, and does that matter?