By Cho Hae-min

Sibling duo AKMU will go on its first solo concert tour in two years in December.

The duo made the surprise announcement during its free outdoor performance on the Mulbit stage in Yeouido Hangang Park in Seoul on Sunday.

More than 30,000 people heard the duo sing its newly released songs, including “Sailor's Song,” “Freedom” and “Whale.”

At the end of the concert, Su-hyeon revealed that their first shows of the tour will be at Kyung Hee University's Grand Peace Palace, Dec. 14-15. The tour will then move to other regions.

On Sept. 25, AKMU released its third full album “SAILING” with all tracks written and composed by member Chan-hyuk. The title track “How Can I Love the Heartbreak, You're the Only One I Love,” topped all major online streaming charts soon after its release.

Before the latest album, the duo released the single “Summer Episode” in July 2017.