JYJ is already making headlines for their success in Europe.

According to C-Jes, the trio’s upcoming concert in Barcelona, Spain sold out 80% of its tickets within three days — surprising the parties involved in the concert organization. In addition, for their Berlin concert, there was a case where the ticket site’s server crashed due to an overwhelming amount of people trying to purchase tickets at the same time.

A source involved stated, “This situation is even more surprising because this is just an individual concert rather than a concert held by a major entertainment company… We were once again able to experience firsthand the popularity of K-Pop in Europe, and the high level of anticipation for JYJ.”

Read more at Allkpop.