DK and Seungkwan of SEVENTEEN are set to showcase refined vocal harmony through their first duo unit release, spanning genres from classic ballad to folk.

On January 5, Pledis Entertainment revealed the tracklist for DK and Seungkwan's first mini album So Yagok via SEVENTEEN's official social media channels.

The album title So Yagok translates to "a love song sung at night." Across six tracks, the duo captures the emotions of ordinary love, highlighting their stable vocal technique and deep emotional delivery as SEVENTEEN's main vocalists.

The title track Blue centers on the theme of "love moving at different paces," expressing moments when emotional depth and timing fall out of sync through layered vocal harmonies.

Both artists participated directly in songwriting and composition. The album also includes individual solo tracks, with DK performing "Rockstar" and Seungkwan singing "Dream Serenade."

Additional tracks include "Guilty Pleasure" and "Silence." Notably, "Prelude of Love" lists both DK and Seungkwan as co-lyricists, underscoring their creative involvement.

DK and Seungkwan will release So Yagok on January 12 at 6 p.m. KST.