Kim Sejeong to Return with New Single 'Solar System' After 2 Years and 3 Months

Article13 days ago

Singer-actress Kim Sejeong has announced her comeback with the new single 'Solar System,' her first musical release in about two years and three months since the 2023 studio album 'Moon', signaling a steady balance between her acting and singing careers.

Her agency confirmed that 'Solar System' will be released on December 17 at 6 PM KST across major streaming platforms. The recently unveiled comeback poster and moving teaser showcase a classic interior bathed in natural light with a softly blurred silhouette, creating a calm yet lingering mood that highlights her more mature image. The visuals quickly drew strong engagement on social media, reflecting sustained interest from both domestic and global fans.

‘Solar System’ is a remake of a track from Sung Si-kyung’s 2011 seventh album. Produced and arranged by artist Zaq Ze, the new version aims to preserve the lingering sentiment of the original while reshaping it into something closer to an actor’s monologue. The team intentionally left space in the arrangement so that Sejeong’s breathing, diction, and nuanced emotions could take center stage, offering a sound that feels both familiar and refreshingly new.

Kim Sejeong has steadily expanded her discography and acting portfolio. Beyond hits like 'Flower Road', 'Whale', and 'Moon', she has taken part in songwriting and contributed to several drama OSTs. On screen, she is currently starring in MBC’s weekend drama 'The Moon Flows Over the Igang River' with a dual-role performance that has drawn attention for its contrasting characterizations. She has also announced plans for a multi-city fan concert tour in 2026, suggesting a mid- to long-term strategy that combines new music releases with global fan engagement.

‘Solar System’ drops on December 17, 2025 at 6 PM KST on major streaming platforms.
The track is a remake of a Sung Si-kyung song, produced and arranged by musician Zaq Ze.
Kim Sejeong is currently leading an MBC weekend drama and has announced a multi-country fan concert tour for 2026.

## 【KStarLoud Insight】 The timing and rollout of 'Solar System' suggest a strategy that links Sejeong’s current drama momentum with preparations for her upcoming 10th-anniversary era. By revisiting a well-known classic instead of releasing an entirely unfamiliar track, the focus shifts to how her voice and interpretation have matured, giving long-time followers a clear point of comparison. If supported by strong live performances, broadcasts, and her planned global fan tour, the single could help reinforce both her streaming performance and international visibility.