Before Michigan, there was New Jersey. Sometimes, at the end of his workweek, Sufjan Stevens would take his songs and hop on a bus out of Brooklyn. He was living in New York’s buzziest borough at the dawn of the 2000s — if not the most exciting time for the city’s music scene, then maybe the most publicized. To be sure, Stevens wasn’t making post-punk or electroclash. (Though if you cock your head, his indietronica debut Enjoy Your Rabbit sounds like another Michigan-to-Brooklyn transplant act — Mahogany — folded in on itself). But in the years before Sufjan began recording what would become Seven Swans, released 20 years ago this Saturday, acts like Devendra Banhart, Cat Power, and Herman Düne had made good-to-great albums of avant and indie folk in NYC. Nevertheless, there was Sufjan, going to South Jersey station by station, forsaking Mecca for the New Jerusalem Recreation Center.