The vocal chamber ensemble New York Polyphony will perform at 7 p.m. next Thursday, Sept. 17, in the Arts at Abingdon Concert Series at Abingdon Episcopal Church, 4645 George Washington Memorial Highway, Gloucester. Admission is free, and a free-will offering will be accepted. No reservations are required. A free wine and cheese reception will follow the concert in the parish hall. New York Polyphony has been critically acclaimed by The New Yorker for its “rich, natural sound that’s larger and more complex than the sum of its parts,” said a press release. The group’s innovative programming ranges from Gregorian chants to contemporary commissions, and its focus on familiar and rare works of the 12th to 17th centuries “has helped bring early music to modern audiences.” The four members of New York Polyphony—countertenor Geoffrey D. Williams, tenors Steven Caldicott Wilson and Andrew Fuchs, and bass-baritone Craig Phillips—have toured extensively, performing in concert halls and participa...