Pre-release of <Hidden Singer 8 Lee Seung-gi>, who says the difficulty doesn't seem easy at all

Source: Women's Generation Eunjo

Unaired clip

https://youtu.be/lGAJl1BBqEI?si=7hwWRAblPvR3T1MX

https://www.youtube.com/watch?v=lGAJl1BBqEI

Source: https://cafe.daum.net/subdued20club/ReHf/5660562