World-famous pop group Backstreet Boys will be in Seoul after 12 years to show their Korean fans how much they have matured since then. Although many idol groups have come and gone since Backstreet Boys burst into the music scene in 1996 with their debut album “Backstreet Boys,” their beautiful harmony has stayed the same over the past 12 years, suggesting that their popularity and staying power comes from the consistent quality of their music. This is the first performance in Korea since Kevin Richardson left the group in 2006, so fans will be treated to the new, yet familiar four-member Backstreet Boys.