Why did SNSD translate some of their songs to Japanese?

hmmm!!! i think thats why most of their songs translated into japanese ver. so that the japanese people who also idolized snsd can really understand and so that if they will have a konsiyerto in Hapon they can sing their songs sa pamamagitan ng translating it into japanese version.... ahm, i think thats all... ::)))

It's because they are promoting in Hapon as well as Korea now. When you promote music in another country, it's only logical to be pag-awit it in that country's language. And, they probably redid Gee and Genie because they were so popular.