A legendary performance was given by Oh My Girl's Seunghee and veteran singer So Chan Whee as the two singers took the stage on KBS2's 'Girl Group War.'

As soon as So Chan Whee's "Tears", well known for its killer high notes, played, Seunghee made a shocked expression on her face. She still gave it her all to hit the excessively high notes, as So Chan Whee gave an exalted performance alongside her. To cheer their fellow member on, the rest of Oh My Girl appeared on stage wearing matching school uniforms.

SEE ALSO: ILLIT's creative director sparks another speculation with Instagram photo possibly aimed at ADOR's Min Hee Jin