A two-decade run is a feat for any production, much less one initially conceived as a seven-minute interval act for a Eurovision song contest. Riverdance has more than proven its staying power, celebrating its 20th anniversary this year. The blend of Irish dance and song has played 11,000 times across 46 countries; it’ll rack up a few more shows during its anniversary run, which brings new costumes, new lighting and a new dance number to the Wang Theatre on May 10-15. 

Riverdance’s 20th Anniversary Tours plays May 10-15 at the Wang Theatre, 270 Tremont St., Boston. Tickets from $35. citicenter.org.