Recording and writing for the album roughly began in the summer of 2010, but full production did not begin until August 2010, after Yunho and Changmin debuted their first performance as a duo at the SM Town Live '10 World Tour concert in Seoul, South Korea.
Cape Town | World Cup | FIFA World Cup | Saturday Night Live | World Trade Center | World Series | 2011 ATP Challenger Tour | 2012 ATP Challenger Tour | 2013 ATP Challenger Tour | 2010 FIFA World Cup | World Bank | World Health Organization | Guinness World Records | live album | PGA Tour | 1978 FIFA World Cup | World Series of Poker | Allies of World War II | BBC World Service | ATP World Tour 250 series | World Heritage Site | town | World Boxing Association | World Boxing Council | 2006 FIFA World Cup | Tour de France | World Wide Web | As the World Turns | World Trade Organization | ATP World Tour 250 Series |