They actually did a good job covering the Backstreet Boys' "As Long As You Love Me," but we have to admit there will only be one AJ. I've spent far too long looking all this up, but here's a little more on these polyglots:
Kiss is comprised of 6 boys - three of which came from the disbanded boyband, Xing. U-Kiss boasts versality in 7 languages, allowing them to communicate with fans in Korean, English, French, Chinese, Japanese, Portugese, and Spanish.
One of the members, Alexander (guy on the far left in pic above or guy with afro), speaks a total of 7 languages. He was born to a Taiwanese father and a Korean mother. He spent his young years in Macau, before moving to the States for study abroad. However, he never lost hope in his dream of becoming a famous singer in the land of his mother, Korea. Macau used to be a portuguese colony until 1999 when Portugal transferred its sovereignty to China. Thus, Macau possesses a very diverse population and has two official languages - Cantonese and Portuguese, not to mention various local dialects. Thus, Alexander was naturally exposed to many different languages in his habitus. He later went on to study Spanish, which was easy because it was a derivative of Portuguese. He also took private lessons in French and Japanese with his sister. So all in all, this amazing, well-versed linguistics genius speaks 7 languages. Go Alexander!