Lee Seung-gi is building excitement for his return, unveiling a preview of his new digital single.

On the 13th, Big Planet Made Entertainment released an album preview for By Your Side through its official YouTube channel, offering fans a first listen to the upcoming tracks.

The clip opens with the title track "By Your Side," blending band-driven sound with emotional lines like "Hold my hand / When your breath rises all the way to the edge."

The B-side "Goodbye" also plays briefly, highlighting Lee Seung-gi's poignant vocals as he sings, "My ordinary day / The air I breathed that used to be my everything."

The project showcases a deeper, more mature musical identity. Lee Seung-gi participated in writing and composing every track, aiming to deliver timeless songs filled with his signature emotional tone.

By Your Side will be officially released on November 18 at 6 p.m.