(YG Entertainment)

Lee Chan-hyuk of the K-pop sibling duo Akdong Musician will begin his military duty next week, the group's agency said Wednesday.

The 21-year-old singer-songwriter will enlist in the Marine Corps next Monday through a basic training camp in southern port city of Pohang, according to YG Entertainment. In Korea, all able-bodied men have to fulfill military duty for around two years.

Lee and his sister, Su-hyun, debuted in 2012 after appearing on SBS TV's music audition show "K-pop Star."

The group, also referred to as AKMU, has been received favorably both by critics and fans for their witty self-produced numbers, including "Don't Cross Your Legs" and "Melted." The duo's most recent work is "Summer Episode," an EP containing the hit song "Dinosaur" released in July. (Yonhap)