Backstage at KCON 2013, the K-pop group talks their big year and details filming a Funny or Die skit with Anna Kendrick.
Another note about "Rum Pum Pum Pum" -- it went No. 1 on the Billboard Korea K-Pop Hot 100, making it your first chart-topper. How did that feel?
Luna: We were really nervous about releasing this song, we are always nervous before a comeback. So it's really awesome that it is doing so well.
Amber: It's been a more than a year since we promoted. It was really reassuring to know our fans were still there and supporting us all the way. Honestly, we were really scared before we came back. We were like, "Dude! It's been a year. How are we going to do?!"
"Rum Pum Pum Pum" is lifted from the "Pink Tape" album, which gave you another No. 1, this time on Billboard's World Albums chart. How does it feel to see your international popularity exemplified like that?
Luna: First of all, we are really happy and when we first heard the news... we were really surprised. The fact that we are receiving so much love and attention from fans from all over the world is an amazing feeling.
Amber: Speaking for K-pop, it shows how global a group can be. It's crazy. I was actually freaked out when I saw that. I'm glad the fans still love it and we want to do everything we can.
You've had such a warm welcome back, even though you've been gone from the scene for over a year. What were you up to that whole time?
Victoria: We focused on our individual activities, including acting and other solo projects.
But you did come together to perform at SXSW, not to mention collaborate on a Funny or Die skit with Anna Kendrick. What was that experience like?
Victoria: It was fun! To be able to collaborate with a star like Anna Kendrick was an honor. We were able to balance out recording in English because we have English-speaking members.
Do you anything you'd like to add for your fans?
Luna: We want to show as much as we can to our global fans and visit many countries as much as we can.
f(x) has ended promotions for "Pink Tape," but fans can look out for Krystal in the Korean drama "The Heirs," premiering Oct. 9.