text: aired celebrity episodes and the International Tournament taped in Las Vegas , Nevada , and then was put permanently into use on the April 23 , 2001 episode .
simplified: When the show aired episodes in Las Vegas , Nevada in February 2001 , an updated version of the 1997 was introduced , with a faster tempo and more upbeat feel . It was then put permanently into use from the April 23 , 2001 episode onward .