Psy was amazed at Canadian pop-star Justin Bieber's musical skills.
On October 9th, Psy posted to his Twitter, "I saw someone compose a melody, write lyrics, and finish recording in less than an hour. That person is Justin Bieber. Wow!"
Psy met up with Justin Bieber, Scooter Braun, and G-Dragon in Seoul, reports K-Pop Starz.
Justin Bieber was in Korea for a concert, and Scooter Braun is Justin Bieber's producer responsible for his Americans activities.