The ensemble Z.R.I. take their name from Zum Roten Igel, or ‘To the Red Hedgehog’, the tavern in 19th century Vienna where Schubert and Brahms went to hear Gypsy and folk music. From their radical re-scoring of the Brahms Clarinet Quintet to include accordion and santouri (dulcimer), Z.R.I. create captivating programmes and recordings with their…