“Delicately entrancing songs for string quartet, flute, and electronics — led by Joachim’s powerful and unpretentious voice — alternate with recorded spoken interludes as well as the singing of a girls choir from Joachim’s family’s village. Released in August on New Amsterdam Records, the project arrives at Merkin Hall in Manhattan on Saturday, as part of the Ecstatic Music Festival, with Joachim joined by the intrepid Spekral Quartet.”