Lina린아VS Kim Yeonji김연지VS Ock Joohyun옥주현| 고음배틀 Vocal Battle

Lina린아VS Kim Yeonji김연지VS Ock Joohyun옥주현| 고음배틀 Vocal Battle - The battle of the 3 main vocalists of 3 talented former groups: Lina (CSJH The Grace), Kim Yeon-ji (Seeya) and Ock Joo-hyun ()