Members of Girls' Generation opened up about their teamwork in their recent exclusive concert 'Girls' Generation 4th tour Phantasia in Seoul' on November 22 at Olympic Park in Seoul. 

The girls said, "There are a lot of happy memories when looking back at this past year." Hyoyeon continued, "Shooting a reality show with all the members was the most memorable. It was really fun and I was really happy, we talk about it even to this day. We had the best teamwork this past year. It was nearly perfect."

SEE ALSO: "Almost too late to have children," Discussion sparks over Girls' Generation Members staying Unmarried as they approach their Late 30s

When asked about their secret to being able to continue reigning the top for nearly ten years, Tiffany answered, "We constantly released music because of the love that our fans have given us. We constantly promoted and worked on our music with passion. We anticipated new tracks and kept reminding ourselves to work hard. It's all because of teamwork."

Meanwhile, it was revealed that the director of Girls' Generation's recently held exclusive concert was Rino Nakasone, worldly renown choreographer who has worked with Britney Spears, Avril Lavigne, Chris Brown, and more.