Composers and musicians explore acoustic space. Generally, they have got by with combinations of readily accessible sounds, with occasional novelties as instruments improved, bit by bit.

Berlioz: Symphonie Fantastique, Ravel: La Valse Orchestre de Paris/Klaus Mäkelä (Decca)

“Powerful, Timeless, Inspiring” it says on the front cover of the programme-book for this year’s supposedly 297th Three Choirs Festival at Hereford. So please leave your frivolity at the cathedral door with your gun and your mobile phone.

Guitarist Louis Campbell and fiddle player Owen Spafford started playing together as teenagers in the National Youth Folk Ensemble when Sam Sweeney (of Bellowhead and Leveret) was its director. They released their first album, You Golden, three years ago. It featured audacious musical extrapolations from Playford’s English Dance Master – also a key source for Sweeney’s Leveret – and with an emphasis on ensuring an abundance space, rather than notes, in the playing.

Silken ambience is the name of the game on this set from Icelandic composer-producer Olafur Arnalds and dreampop singer Talos, aka Eoin French, who tragically died in August last year, aged 36. Arnalds completed the album after his death.

Actually it was a Thursday evening to Saturday experience, but what riches in seven concerts. The only Britten I heard was one of the Six Metamorphoses after Ovid as I approached the Red House on a hot Saturday morning, just too late for that pop-up performance, but in time for Berio. The old guard of composers made a mixed impression, but one of several highlights was to discover how imaginative the new generation is proving in six world premieres.

Opera can take many forms and fulfil many purposes: this chamber opera by Zakiya Leeming and Sam Redway is about vaccination. Based on history, it has a story to tell and lessons to teach.

This year’s Aldeburgh Festival – the 76th – takes as its motto a line from Shelley‘s Prometheus Unbound. The poet speaks of despair “Mingled with love and then dissolved in sound”. With or without words, music shapes and voices feelings that would otherwise lie beyond expression.

Brahms: Lieder Christian Gerhaher (baritone), Gerold Huber (piano) (Sony)

Jürg Frey: Voices EXAUDI Vocal Ensemble/James Weeks (Neu Records)