Taeyeon's music video for 'To. X' has been released, featuring a total of six tracks, including the titular song. The album showcases a variety of emotions, highlighting Taeyeon's adaptability and musical prowess.

'To. X' stands out with its elegant fusion of guitar strums and melodic features, forming an R&B tune that harmonizes with Taeyeon's serene and expressive voice. The lyrics tell a story of self-awareness and emancipation from a manipulative relationship, culminating in its termination. The music video is anticipated to visually capture the tumultuous feelings associated with this unreasonable affection.