In a Renaissance artist’s studio, a wannabe master proved his skill by drawing a perfect circle. Perhaps playing Beethoven’s A minor Bagatelle (aka “Für Elise”) as an encore should count as the pianist’s equivalent. At the Barbican last night, Alice Sara Ott did just that with the ubiquitous ring-tone earworm.

The Concertgebouw Orchestra of Amsterdam began their two-concert visit to the Barbican with a crowd-pleasing programme: Brahms and Beethoven. We are used to hearing the pinpoint precision and transparent textures of the London Symphony Orchestra from the Barbican stage, but the Concertgebouw has a different sound.

The Hermes Experiment are the cool kids of the contemporary music school, who have brought a "build-your-own-repertoire" approach to generating music for their unique combination of soprano, clarinet, harp and double bass. As their name would suggest, they are firmly in the experimental tradition, using improvisation, extended techniques and graphic scores.

In usual circumstances, a fully staged opera and every voice-and-piano song-cycle by a single genius in one weekend would be an embarrassment of riches. The only problem about Britten hitting the heights, above all in setting toweringly great poetry by Auden, Blake, Donne and Hölderlin, at the top of a long list, meant one sitting and squirming at most of Ronald Duncan’s wretched lines for an opera which even in its very subject is problematic, The Rape of Lucretia.

We enter the Barbican Pit as if visiting an apothecary. On the walls of the passage approaching it there are scientific diagrams and documents, while the stage itself is set up with glass cases filled with different potions and experiments.

I’ve not heard a didgeridoo in concert before so was grateful to the Australian Chamber Orchestra for giving me the opportunity, as part of a busy programme at Milton Court last night. Didgeridoo virtuoso William Barton was put alongside Beethoven, Janáček and others as the touring string orchestra, led by Richard Tognetti, settled into a three-day Barbican residency.

Though billed as a “concert performance”, this was really much more than that. With the resources of their own theatre, Opera North’s team present a staging that employs a big, built-up and raked floor, with a simple platform in the centre and a starry-night black back-cloth, and their principals and chorus move and act in simple but effective style.

You invariably come away from an Aurora Orchestra concert with ears refreshed and mind revived. As a storm swept across London on Sunday, the audience at Kings Place enjoyed their own cleansing wind in the form of this genre-spanning gig in the “Voices Unwrapped” season, led by tenor Nicholas Mulroy. It took us all the way from Baroque Europe to the socially-committed “new song” movements of modern Latin America. 

This is the third time I’ve heard Path of Miracles live this year and I’d happily hear it another three times before Christmas. I reviewed the amateur Elysian Singers sing it in February, and the BBC Singers took it on for the first time in May – but last night’s triumphant version by Tenebrae was surely the best of the lot.

Good conductors should surely be seen as well as heard. Positioned behind Emanuel Ax’s piano in Brahms’s first piano concerto, with the two flanks of the London Philharmonic’s strings spread wide on either side across the stage, Karin Canellakis sometimes looked from the stalls of the Royal Festival Hall as if she were directing the chamber ensemble of horns and woodwind just in front of her.