Last weekend, rock music could be heard reverberating through a church in Ridgewood. Framed by a stained glass window depicting Jesus with a flock of sheep, Iyare Osarogiagbon was singing from the stage, backed by Alphabet City, a “throwback rock” band of young musicians from Queens and Brooklyn. The concert, hosted at Ridgewood Presbyterian Church, was a part of the Stone Circle Theatre, the church’s nonprofit production arm, which has set its sight on becoming a spot that elevates and empowers artists in Ridgewood.