There is much to love about the latest Voces8 Live from London online festival. It goes beyond having a purely choral line-up, embracing instrumental music for the first time, while maintaining its focus on vocal performances of the highest standard.

After meeting on the Genesis Sixteen Young Artist Scheme, this vibrant vocal ensemble has been rapidly gaining momentum since their debut at St John’s Smith Square in 2017. Under the direction of conductor Sarah Latto, the final concert in their UK tour was polished, poised and subtly powerful.

While the big choral societies are asking, with good cause, why they remain silenced when it’s OK for football fans to sing on the terraces, the top voices of smaller ensembles are being heard again by select audiences. Not so small, in the case of the 24-strong young opera choruses of Garsington (times two, the groups divided between operas) and Grange Park Opera.

So, blinking, after too much isolation, into a spring evening for a first live indoor gig for over a year was always going to be exciting, if just for novelty value. But for a gentle breaking-in to live music, the London Bulgarian Choir was an inspiring choice. Having 26 singers on stage is an achievement at the best of times.

For their concert debut at St Martin-in-the-Fields, The Gesualdo Six brought a programme of English motets for the final instalment in the venue's trio of Easter concerts. Having come together for a one-off project in 2014, singing Carlo Gesualdo’s Tenebrae Responsories for Maundy Thursday, this young, all-male ensemble found their vocal chemistry worked so well they carried on making music together.

Last Easter, viewing options were limited: no-one who saw it will forget a version of Bach’s St John Passion from the church where it was first performed in 1724, Leipzig’s Thomaskirche, with an idiosyncratic tenor taking all the parts other than the chorales – live from a quintet and streamed in from around the world – and accompanied only by organ/harpsichord and percussion. But the real thing has been so longed for.

Eyes watering, heart thumping, hands clenched: no, not The Thing, but a spontaneous reaction to the opening of Bach's St John Passion in the urgent hands of Masaaki Suzuki. How his Bach Collegium oboes seared with their semitonal clashes while bass lines throbbed with pain, before the chorus added a different, supernatural turn of the screw.

There’s a lot of plucky British charm to Military Wives, from Peter Cattaneo, the director who won the nation's heart with his debut film The Full Monty over two decades ago.

Not long after noon on Sunday, strange bells began ringing. In just 11 bars, Bach summons pairs of flutes, oboes and violas da gamba against pizzicato strings and continuo to tintinnabulate against the alto's recitative lines about a "vibrating clang" to "pierce our marrows and our veins". These hallucinatory sounds and harmonies could have been composed yesterday. Instead they're at the service of a 1727 lamentation mourning the death of a princess.

“Try to imagine the whole universe beginning to ring and resound” wrote Gustav Mahler of his Eighth Symphony. “There are no longer human voices, but planets and suns revolving.” It’s an image that captures the impossible scale and mind-boggling ambition of this so called “Symphony of a Thousand”.