One person playing one instrument from home to the edification and delight of thousands: it's been a constant in these confining days, and well meant even if the sound isn't always up to it, a necessary substitute for live communication on both sides. But this is something else: an education, a detailed sharing of love and consolation which makes me wonder why other musicians haven't taken up the challenge (maybe some have, but I haven't heard about it).

Bach, being The Greatest, can take any amount of adaptation. I'm especially addicted, for instance, to CDs on which the Japanese percussionist Kuniko plays cello suites and violin sonatas on the marimba.

Bach: St Matthew Passion The Choir of King’s College Cambridge, Academy of Ancient Music/Sir Stephen Cleobury (King’s College Cambridge)
Bach Collegium Japan/Masaaki Suzuki (BIS)

Bach: The Well-Tempered Clavier George Lepauw (piano) (Orchid Classics)

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.

"All true spiritual art has always been RADICAL art": thus spake the oracular Georges Lentz, composer of the pitch-black odyssey for electric guitar that took everyone by surprise last night. In that vein, why not add that all the greatest performers always push the boundaries, and that 28-year-old Sean Shibe, though included by the sponsors of this concert among "emerging talent", is already in their select company.

Not even the unengaged or terminally weary could have dozed through this. Pianists have often commented how the Wigmore Steinway is too big for the hall, and most adjust accordingly. Not 27-year-old Italian Beatrice Rana, but not in the bad way of interpreters who simply bash (there was a young Ukrainian here recently who did just that).

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.

Schütz: The Christmas Story Yale Schola Cantorum/David Hill (Hyperion)

Bach: Christmas Oratorio Thomanerchor Leipzig, Gewandhausorchester Leipzig/Gotthold Schwarz (Accentus)