While Psy is the artist and performer of the song, there's more to the creation of a song:
* Songwriting: The song was written and composed by Psy himself.
* Production: It was produced by Yoo Gun-hyung, a close friend and collaborator of Psy.
* Video Direction: The iconic music video was directed by Cho Soo-hyun.
So, while Psy is ultimately responsible for "Gangnam Style", it was a collaborative effort with various creatives involved in its creation.