Among the foremost interpreters of the work of Arvo Pärt, the Grammy-winning Estonian Philharmonic Chamber Choir brings his Fratres, Cantus in Memoriam Benjamin Britten, and Adam’s Lament among other works that capture his expressive genius for the elegiac and the sublime. The choir, founded in 1981, draws raves from the critics: “So wondrously talented a group of singers,” said the New York Times.