Seohyun is the best because she sounds the same as she does in the mv.Seohyun will always be my fav 4 ever!!!!!!!!!!!!!!!!!!!!!!!!!!!

Tae, Sooyoung, Sica, Tiff.

Tae,Seohyun,Sunny,Sica

Of course our Taeyeon! :D

Seohyun can't really hold her notes. Taeyeon and Tiffany are the best vocalists in my opinion. Jessica is a good vocalist too,but she can't hold it when she's dancing.

Oh my God! Sooyoung?? She can't even hold her pitch while dancing...

Taeyeon,Tiffany and Jessica are the best in singing in live. Sooyoung and Hyoyeon??? Don't make me laugh!! They are superbly great dancers but totally not great in singing live.

Are you kidding me?? Seohyun?? [speechless] She might be a good vocalist, but I think Taeyeon and Jessica are better than her. Even Sunny can sing better than her most of the time.

mine vote go too taeyeon though i like fany and Jessica singing live too

taeyeon is the main vocalist and can do high notes:3

well i think that was easy. just listen her her voice in MISTAKE LIVE on youtube and u can see y

i love Seo's voice .. and in the Etude in her high part there... PERFECT everytime they perform .. and Tae,Sica too .. and a little bit of Fany for me .. :)

tae yeon

and taeyeon...i think tiffany's voice is the weakest of the singers..but i still lover her

gotta be seohyun

Tae is the best singer in kpop, I think. But in my opinion, Sica is better in live performance (Tae is good too)

YURI IS JUST TE BEST XD

sooyoung,tiffany and taeyeon

Hyoyeon

Taeyeon & Tiffany

jessica, taeyeon, and seohyun sometimes sunny...sometimes

seohyun

Taeyeon, Seohyun and Jessica