‘We’ve come all the way from London, and our name means ‘Good on yer’,” we were told at the start of the second Garsington Opera spring concert.

The group specialises in klezmer, and other traditional East European folk music, conjured from a violin (Meg Hamilton), clarinet (Susi Evans), guitar (Matt Bacon), mandolin (Ben Samuels), double bass (Oliver Baldwin), and percussion (Vasilis Sarikis), with vocals from Cigdem Aslan.

Disarming, too, was the way in which She’koyokh began their concert. A very lugubrious rhythm was picked out on the bass, leading to the thought: “Oh dear, this is going to be dull.” Then the speed accelerated like a Formula 1 car as the rest of the group joined in. For rhythms simple, and rhythms complicated are a vital ingredient of this music – the Yiddish Hora, for instance, a slow Romanian dance in triple meter, or a reflective Serbian number with its contrasting fast rhythm, surely inspired by galloping horses.

Through Jewish klezmer dances Bulgar, Khosidl, Sher, Hora, Terkisher, and Kale Bezetsen we went – the last named an improvisation, originally played to bring a bride to tears at the nostalgic moment when she realises she is leaving her family to live with her new husband. Interwoven with klezmer there were folk dances from Bulgaria, Greece, Turkey, and Romania, at times spiced with gypsy melancholy.

To say that She’koyokh’s performance was accomplished would be a gross understatement. In particular, all six musicians have plainly got rhythm in their bones, and all six displayed an amazing ability to characterise the music by enhancing the normal range of their instruments. Cigdem Aslan sounded a touch reticent to begin with, but soon added haunting vocals. It’s invidious to pick anyone out from such a well-knit group, but I have never heard any other clarinettist pull so many notes out clean and clear at such a breakneck pace, or with such infectious enthusiasm.