TRIBUTE—In 1977, Elton John pulled a Michael Jordan and announced he was retiring at the top of his game—which would have been fine. The 1970s were Elton John’s best work—fun, smart, catchy ditties—and this is the period of time that Kenny Metcalf, Elton John impersonator extraordinaire, pulls from. 8 pm. Tower Theatre, 835 NW Wall. $25.