On November 14 episode of MBC's television show 'Point of Omniscient Interfere', Koo Hye Sun made a guest appearance.

Koo Hye Sun said, "I appeared in 'August Rush' for like three seconds."
She continued, "Initially, I was supposed to act an Asian girl who sings. When I got to New York City though, they had already filmed that scene."
She went on, "It turned out there was miscommunication between my staff and the production team."

She added, "I woke up early and got ready for the shooting. After that, I filmed my 3-second scene."

(Credit= MBC Point of Omniscient Interfere, gramfilms)
(SBS Star)