“Curling is a people's game, but while the Canadian women's curling championship, the Tournament of Hearts, is a professional competition, there are no full-time pro-curlers. Ontario's Constantines, too, counterbalance their work-- their allusiveness and unblunted riffs-- with a rough-hewn populism. Their songs might conjure the ghosts of Italian futurists, obscure 50s casualties, or Rod Stewart, b”