S4·E52 – Amazed by BalladKyu's Secret Weapon… Final Battle of SJ's Vocalists - 2nd Prelims

Leeteuk

Himself

Kim Hee-chul

Himself

Yesung

Himself

Shindong

Himself

Eunhyuk

Himself

Donghae

Himself

Choi Si-won

Himself

Ryeowook

Himself

Cho Kyu-hyun

Himself