NMIXX's Sullyoon and Park Jae-jung are set to release a duet track, heightening anticipation for a powerful vocal collaboration.

Romantic Factory announced on February 25 that the two artists will unveil "Just Say It As It Is" today.

An Orchestral Ballad of Lingering Heartbreak

The track is a traditional ballad. Park Jae-jung reunites with composer Park Hyun-joong, the duo behind his hit "Let's Say Goodbye." Together, they deliver a deeply emotional song that captures the lingering aftertaste of separation.

The lyrics express a poignant wish that even the present pain would remain a little longer. An orchestral arrangement amplifies the track's emotional intensity.

From 'Lee Mujin Service' to Official Duet

The collaboration was sparked by Sullyoon's appearance on KBS Kpop's "Lee Mujin Service," where she covered "Let's Say Goodbye." She performed the song five keys higher than the original, impressing even Park Jae-jung with her refined interpretation.

The new single extends that musical connection. Sullyoon's clear yet powerful high notes blend with Park Jae-jung's deep, resonant tone, promising standout vocal synergy.

"Just Say It As It Is" will be released on major streaming platforms at 6 PM KST on February 25.