The musicians of Ensemble Grizzana are arranged in the usual way for their concert at St Paul’s Hall in Huddersfield. Another player, the percussionist Dmitra Lazaridou Chatzigoga, sits among them. The table beside her holds a small and rather beaten-up zither and a tray of the kind of objects you might find at the back of a spare kitchen drawer: two filter baskets from stove-top espresso machines, a tea-strainer, letter opener, a cog, a nut and bolt.