After giving us back-to-back comebacks with "Party" and "Lion Heart," Girls' Generation was back again to treat us with something we had long been waiting for: a concert. On Nov. 22 and 21, our eight favorite girls held their fourth solo concert, "Phantasia in Seoul," at Olympic Park.

During the concert, Taeyeon, Tiffany, Hyoyeon, Sunny, Yuri, Seohyun and Sooyoung got more intimate with their fans by talking about their lives behind the stages and cameras. The girls agreed that 2015 was a fun-filled and memorable year for them, reports AllKpop.

Hyoyeon talked about how the girls bonded during their reality show "Channel Girls' Generation."

"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," said Hyoyeon.

When asked about how Girls' Generation manages to keep on going - and even dominating - a decade after debut, 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 "Phantasia" was directed by Rino Nakasone, a world-renowned choreographer who has worked with Britney Spears, Avril Lavigne and Chris Brown.