“Who taught you that song?”

Ethan Carter lowered his fork and knife, then rose from the table so suddenly that his mother nearly knocked over her water glass.

Outside the restaurant, along Congress Avenue in Austin, Texas, a boy who looked about seven years old was singing beside a small portable speaker. The melody wasn’t familiar to anyone else, but Ethan knew every word. He knew because he had written those four lines himself thirteen years earlier, back when he and his former wife were living in a cramped apartment on the east side of San Antonio.