The Wonder Girls tour began on February 28 , 2009 , in Bangkok , Thailand . Along with their mentor , JYP , they held concerts throughout the United States . The group then returned to South Korea , holding concerts in late March in Seoul and Busan . This tour was documented in the M.net reality show '' Welcome to Wonderland '' . Following the tour , the Wonder Girls debuted a music video for " Now " , a cover of the Fin.K.L single . In March 2009 , the Wonder Girls confirmed that the group would launch in an English-language music career in the United States with the official release of an English version of " Nobody " in summer 2009 . It was later announced that the release would be followed by and English version of " Tell Me " , and that an English album would be forthcoming . In June 2009 , JYP Entertainment announced that the Wonder Girls would be joining the Jonas Brothers on the North American leg of the Jonas Brothers World Tour 2009 . In order to concentrate on their American debut , both Sohee and Sunmi had dropped out of high school . The English version of " Nobody " was released on June 26 , 2009 , the day before the start of their tour with the Jonas Brothers . The Wonder Girls were initially signed on for 13 concert dates across the US , but they were eventually given the opportunity to join the Jonas Brothers for a total of 45 concert dates . " Nobody " entered the '' Billboard '' Hot 100 in October 2009 , making them the first Korean group to enter the chart . The song also topped the Taiwan and Hong Kong music charts
Jonas Brothers World Tour 2009
Jonas Brothers World Tour 2009
Wonder Girls