Lee Soohyun Drops 15 Pounds While Making The New Akdong Musician Album: 'She Wanted To Lose Weight So Badly' YG Rep Says

Talk about multi-tasking!

Hard at work on the follow-up to Akdong Musician's 2014 debut album "Play," vocalist Lee Soohyun of the brother-sister duo has lost over 15 pounds thanks to an all-vegetarian diet and regular exercise.

"She wasn't fat, so nobody recommended that she should go on a diet," a representative for Akdong Musician's label YG Entertainment told the Korean news agency Osen.

"But she wanted to lose weight so badly and was so determined. That's why she worked on losing weight and on their new album at the same time."

Though a press release from YG Entertainment quoting the Osen interview that posted to the label's website on Monday, makes it pretty clear where Soohyun could have gotten the idea that she needed to lose weight.

"Before, she was a bit chubby, but losing 15 pounds for a girl of her height, 5' 5, made all the difference," the label press release read.

Akdong Musician originally rose to fame in 2013 after winning the second season of "K-pop Star," a live televised music competition produced by the Seoul Broadcasting System. In addition to dropping the AKMU album the following year, Lee also teamed up with YG labelmates Lee Hi, (whose solo album "Soulite" came out last month) and Bobby of the boy band iKon on the single "I'm Different" under the moniker of Hi Suhyun.

Her Akdong Musician bandmate brother's reaction to the single could have something to do with why more Soohyun collaborations haven't happened.

"My brother was pretending to be okay; he was giving off the attitude of not caring of what we do," the singer said in a 2014 interview, according to the Korean entertainment website allkpop.

"He said, 'my way and your way are different,' and looked like he really didn't care. Rather than jealousy, he was more disappointed from an artist's point of view. In terms of music, there are a lot of things that Akdong Musician has to show, but he was worried that my image would be wasted through Hi Soohyun."

The second Akdong Musician album is slated for release on YG Entertainment on May 2.