Get ready for a nostalgic trip! The new making-of video for Four Hands, Two Sonatas drops, showing Song Kang and Lee Jun Young rocking school uniforms.

This behind-the-scenes look captures the chemistry before their epic piano rivalry ignites. Catch the drama’s premiere on August 29 at 9:10 p.m.

KST. Witness their transformation from teenage friends into professional, high-stakes rivals.