On August 25th, Cube Entertainment updated their official Facebook page with new photos straight from the set of their 'United Cube in Japan' concert! These unedited cuts give fans an exciting glimpse of what's to come, especially with�G.NA's first ever performance of 'Top Girl'.�It's also been said that she'll be revealing another new track at the concert. Labelmates 4minute and B2ST can be seen in comfortable attire, working hard for their concert that's just a day away. For those fans who can't make it to the concert, these photos come as a special treat and build hope for future Cube United concerts in other nations. In addition to the first ever stage performance of 'Top Girl', Cube Entertainment has also prepared a variety of collaboration stages between the labelmates, so stay tuned to allkpop for further updates! [gallery]