Always the Wedding Singer, Finally the Bride

When Margaret Allison Doherty and Joshua Michael Zager were married on Oct. 9 in Saratoga Springs, N.Y., there was a reason Ms. Doherty’s mother, Molly Dwyer, compared the wedding to “a music festival.” Ms. Doherty, 32, has been singing at weddings since she was 10, performing with multiple bands in Saratoga Springs, where she grew…