After their sudden rise due to the now iconic fancam video, another fancam featuring EXID has gone viral for very different reasons.

On Feb. 27, a fancam video was uploaded to YouTube featuring EXID's performance at the Seoul Vocational Training Institute. But unlike their usual performance of the hit single "Up & Down," the members seemed visibly confused when they realized there were no backing vocals to accompany them.

Since its upload date, this fancam has garnered over one million views, and it appears viewers are impressed with the group's live vocals despite the lack of backing vocals.

"If you can sing and dance live, I will be your fan," commented YouTube viewer ZAmuzik. "Besides being a pretty face and hot body, each girl in EXID has won me over with their live vocals. Great performance girls!"

During an interview with Yonhap News in January, the members of EXID discussed their recent success due to a fancam video that has since garnered over 11 million views on YouTube.

"Although there have been fancams that became hot topics, we've heard that there hasn't been a case where a song would rank highly because of a fancam [before]," said Junghwa according to the website allkpop.

"At first, our friends told us, 'Your video is a hot topic on social networking sites,' and our song entered into the top 100. It rose to 82nd place and we thought it would stop there. Yet as our song ranking continued to climb we were amazed, anxious, and scared. Afterwards we became conflicted; our concern was mixed with several emotions. We can't believe that this kind of thing happened to us."

When first released in August, "Up & Down" entered South Korea's Gaon Domestic Chart at number 94 before falling off the chart the following week. However, the track first re-entered the chart on Nov. 16 before topping the chart for the week of Dec. 28.

Check out EXID's latest viral fancam video below: