1. H.O.T
Representative songs: Warrior's Descendant, We Are The Future, I Yah!, etc
2. S.E.S
Representative songs: I'm Your Girl, Love, etc
3. Shinhwa
Representative songs: T.O.P (Twinkling of Paradise), Only One, Wild Eyes, etc
4. Fly To The Sky
Representative song: Sea of Love
5. BoA
Representative songs: Girls on Top, ID: Peace B, etc
6. DBSK
Representative songs: Rising Sun, 'O' - Jung.Ban.Hap, Triangle, etc
7. Super Junior
Representative songs: Sorry Sorry, Mr. Simple, Bonamana, etc
8. SHINee
Representative songs: Replay, Ring Ding Dong, Lucifer, etc
9. Aespa
Representative songs: Black Mamba, Next Level, Savage, etc
10. Other
-For boy groups, it's Shinhwa. For girl groups, it's S.E.S
-I personally think it's BoA
-Has Red Velvet never worked with Yoo Youngjin?
-I didn't know Yoo Youngjin worked for Replay??
-DBSK was almost like Yoo Youngjin's muse... Almost all of their title tracks were made by Yoo Youngjin, right?
-S.E.S Bada's vocal suits Yoo Youngjin's songs really well
-S.E.S and Shinhwa. I personally think out of all these artists, BoA had the worst chemistry with Yoo Youngjin
-Of course it's Shinhwa, they suited Yoo Youngjin's RnB vibes really well
-I still can't move on from S.E.S and Yoo Youngjin's chemistry...
-Shinhwa, especially Lee Minwoo
-Now that I look at it, almost all of the most popular songs from these groups were written by Yoo Youngjin. He's truly a genius.
-Has Yoo Youngjin never worked with NCT, SNSD, and Red Velvet? I'm asking because I really don't know
-Shinhwa and Aespa
-I personally think it's Fly To The Sky
