[MV] SEJEONG(세정) (gugudan(구구단)) _ If Only(만에 하나) (The Legend of The Blue Sea(푸른 바다의 전설) OST Part.10) 

I don't quite understand why people tend to underrate Sejeong's vocals and rank her under Yeonjung, Kang Sira, and Kim Juna. People even say that she won the vocal mission out of popularity but I personally think that Sejeong is the best vocal on Produce 101, she sings with so much emotion it just gets in your heart.

great singers dont just have beautiful voice, or just reach high notes. but they also sing with emotions

KIM SEJEONG'S NAME WILL MARK A HISTORY IN KOREA BECAUSE OF HER TALENT !

One of my fav ost songs and i cannot believe this song released in 2017. I came back here because se jeong caught my attention again in Business Proposal drama 🤩

sejeong definitely has an amazing voice, heart and pretty face.

Who else agrees that this is their favourite OST in Legend Of The Blue Sea ? Because I do. Very much.

I went back to listening to every song and looking at people's comments. I'm really glad that many people found out about her after Business Proposal. Please continue to love uri sejeong. She is a kind, beautiful, funny and very talented person🤧❤️

Sejeong is not the Next IU, she is who she is, the one and only Sejeong

Not a fan of IOI ir Gugudan, bit this girl's voice is truly precious and mature. If i look at her face I would say she has a younger pitchy voice, how old is she? I think she can become one of the best voices in kpop in the future. I hope she and her group get more recognition.

And now she is leading in The Uncanny Counter. Just discovered her recently, she is indeed talented 💗

who else is listening to this in 2021?

I knew her from this ost but didn't know she can act too! Now I'm watching business proposal and just being amazed🥺 How can she be so talented?!

Wow. I didn't know Sejeong before School 2017. She's really talented. Now she's one of my fave actress.

Kim Sejeong, the rookie legend of 2016

OMG I didn't know that this is Se Jeong's OST, I really love this song

came back here to say that I am so proud that I stan kim sejeong ♡ support her on-going drama "business proposal" everyone !

I checked other popular OST. everyone is talking about the drama. But this OST, everyone is talking about how good and amazing Sejeong is. ❣️

OMG! Sejeong sang this OST? This is my fav OST and yet I didn't know it was sang by Sejeong? Huhu she's so talented. I love her 💖

Wow! I just know now that she sang the OST of the Legend of the Blue Sea

I watched Legend of the Blue Sea and was quite captivated by the drama because Jun Ji Hyun did this drama just a few months after her first child. And all the underwater filming in the cold water was really difficult for her. And this video clip is a good summary and a beautiful song. But after watching Business Proposal, the name Sejeong suddenly light up the song. And she has an amazing voice. I wondered why I did not search to find out who this singer is 5-6 years ago. But it is better late than never. Sejeong should really be a solo artiste and release more singles...she has such an amazing voice.

긴 꿈을 꾸다 깨어난 걸까 내가 널 알아본 순간 이름도 없던 내 사랑은 시작된 건지도 몰라 널 알기 전 저 하늘도 늘 이렇게 눈부셨던 걸까 만에 하나 우리 사랑이 된다면 만에 하나 너와 시작될 수 있다면 아껴 왔던 마음과 끝을 모를 사랑을 널 위해 쓸 거야 내 모든 순간을 다 너에게 난 너와 보고 또 너와 듣고 너와 숨 쉬는 모든 게 버릴 거 없이 행복해서 네 옆에 멈추고 싶어 널 알기 전 흐릿했던 내 모든 게 기억나질 않아 만에 하나 우리 사랑이 된다면 만에 하나 너와 시작될 수 있다면 아껴 왔던 마음과 끝을 모를 사랑을 널 위해 쓸 거야 내 모든 순간을 다 너에게 기억해 기억해 이곳에 있을게 영원히 영원히 이렇게 네 곁에 단 하루만 내게 허락된다 해도 단 하루만 너와 사랑할 수 있다면 잊지 못할 오늘과 변치 않을 기억들 내가 가진 사랑을 모두 다 널 위해 쓸 거야 마지막 숨까지 다 너에게

sejeong's voice thooooo 💕💕💕 when eunji and her sang together my heart couldn't handle it. i wanna hear more osts or duets (possibly with eunji?? or actually her voice would sound beautiful with a lot of male vocalists). her voice is different from most rookies...and idk who her voice reminds me of....

Owahh...I didnt know Sejeong was the singer of this song😱😱 shes great!😍😘

Missing my ultimate’s vocals :”) so I’m doing a marathon of Sejeong’s songs

크 세정이 노래 나오는거마다 다 좋네

Sejeong's talent is unstoppable. Rise Sejeong, rise!

Omg Kim sejeong sang this. What a great singer

I remember liking this song so much back then and searched who the singer was. I like Sejeong then but, became a fan now when I started watching A Business Proposal. She's so talented and she seems kind.

I like Sejeong since Produce 101 and until now on her new drama, also my fave ost of her is Meet Again

Aaa.. Kim se Jeong.. sarangheyo.. ❤️ you are a multitalented woman🤩 I salute and envy you.. success and happiness always 😍🤩😘

I Just Knew that My Favourite Actress from Business Proposal Drama (KIM SEJEONG) was the One Who Sing The OST of My Favourite Drama in 2016 (Legend of The Blue Sea) 😱❤❤❤ WHAT A BEAUTIFUL VOICE & MULTITALENTED SEJEONG (Shin Ha-Ri)!

I came here because of sejeong..i can't believe she sang this ost.. legends of the blue sea is one of my favorite drama..

IOI feels😍😍😍 kim sejeong unnie😍😍😍👏👏👏

I'm so proud of you Sejeong-ah! 💕 Please do listen to her solo "Flower way" as well and check out her gg "Gugudan"! :)

The fact that i didn't understand every single thing she says but i rlly rlly captivated by her voice dude it's so soothing ✨😩

I did not expect seojeong sang this song. This is my very favourite song in this series.

i'm a fan of Sejeong since PD101 days up until now. No wonder she'd sing OST. Her voice and the way she sings ballad songs are way out of heart. "Tagos sa puso". Everytime Sejeong sings, she always gave her best, put herself on the song itself and makes her a good or should I say GOD Sejeong. Congratulations on your achievements, Sejeong. More to come. Let's support her. Hwaiting!!!!

i really really really hope sejeong and her fellow ioi members can be successful. theyre so talented and they deserve the best of their life !! one day if god can make my wish come true i hope ioi will be reunite and collab with snsd ( nah it wont happen ) but i really hope sejeong and taeyeon can collab !!!!!!!!!!

Its 2022 now but I’m still listening to this Sejeong’s song😭😭😭😭 its been 5-6years since LOTBS huwaaa I can’t🥺💘💕

I never know shes the singer of this song 🥺 her emotional voice really get into my soul. She so talented. Before i know her, i really praise the singer of the song bcs i can feel the emotional from her voice thru this song but i never search for it. Sejeong! ❤️

Sejeong is really precious she has that beauty,talent and she's also very kind

역시 갓세정! 음색 요정! ♡♡

2022년이지만 나는 여전히 이 영화와 이 노래를 사랑합니다.

My most favorite OST. I even cried listening this song during lobts days. So shock for me to found out that our very own Shin Hari was the singer.😍😍😍

Se Jeong has 4 songs in Top 100 of Melon chart. 2 with IOI, 1 solo, and 1 ost. You may scream with joy.

sejeong's voice... waaaa ♥_♥ too much for me... why i'm crying?!

I listen to this song after Sejeong sang it in her fanmeeting. My ears were blessed that day.

Kim Sejeong with angelic voice ♡

So great to hear Sejeong's voice in full effect. She's just a wonderful vocalist :)

QUEEN SEJEONG you deserve the world

i love all her ost song.. her voice so amazing really love her new drama bussines proposal❤❤❤

This is the end of 2020 but i'm still here to listening her voice, Kim Sejeong i hope for your more success in the future ✨

yeahh, her low key notes is indeed one of the best in kpop rite now among rookies, or even in general

thank you so much LOTBS team for choosing jellyfish as OST producer of your show. Sung Si Kyung, Ken and now Sejeong. Please let Seo in Guk do the next. Or duet of any 2 of them. Hwaiting!~

I just realized that se jeong sang this beautiful song. I loved this song since legend of the blue sea 😊

이 노래는 언제 들어도 좋음 다들 갓세정하는 이유가 있네 이거 세정이 노랜줄 ㄹㅇ 모름 아이돌부르는 노래만 들어서 얘가 이캐 잘하는줄 몰름,ㄷㄷ

Sejeong, you are the best. Your emotional voice touches my heart. 5ting

와 푸른바다의전설 보는데 김세정 목소리나오길래 에이~설마했는데 진짜나오네요 이노래 너무좋아요 잘듣고갈게욤^^ 김세정누나 감사합니다 이러한 노래를불러주시고^^

New comers in this song are from watching Business Proposal. While here I am, fell in love with this song years ago just because it's Sejeong's voice. I'm like a proud Mom being happy that she's finally getting the attention she deserves... YEARS BACK.

i really admire her voice since she collab with Doyoung, then i started supporting her songs, not only she has a very great voice,great dancing and visual...i love her personality too. I also watched her drama school 2017 haha she is so cute, i search her alot that time. She is so cute in BUSTED and so cool in her dramas.

This song is too sad and it does touch my heart until the part where Shim Cheong punch that machine and earn high score. I'm crying

i fallin in love with sejeong since the first time she appeared in PD101. btw, even though sejeong is good at (woman) low voice range, her hi-pitch is no joke.

Although there are many talented singers in Korea who can sing, there are not many who can 100% integrate the emotion of the song into singing like Kim Sejeong. I didn't know her when I watched "The Legend of the Blue Sea", but I get goosebumps every time I listen to this OST. ! Kim sejeong is a great singer and actor, worthy of respect and love❤ ❤❤

Who's with me? 2021 Listening to this.

Se Jeong! beautiful voice. 100% Dear Friend. support to Gugudan!

푸바전보면서 이노래 맨날 좋다고 느꼈는데 세정일거라고는 상상도 못했다;;알고있었지만 노래 겁나 잘부르네 역시 갓세정👍👍

I honestly didn't know who was Kim Sejeong until Business Proposal. Oh God, she sounds, looks, acts amazing. Jesus must've work hard to create her that us mere mortals. LOL

Indeed a very talented woman.She slayed everything , dancing and acting and now her acting skills in the uncanny encounter is no joke😉

갓세정 꽃길만 걷자 ❤

Sejeong never failsss!! 😭❤️

Sejeong of business proposal brought me here 😊 jun ji hyun is so beautiful 💗

Sejeong brought me here. I just can't get over that there's no more Shin Hari every Monday and Tuesday huhuhu.

Jellyfish's artist getting better♡

SEJEONGGGGG ❤

2021 but I'm still in love with this drama and ost of sejeong

This is indeed a masterpiece, I only discovered her recently thanks to Uncanny counter and currently watching her dramas, variety shows and so on..

하... 이게 어딜봐서 신인의 감성????!! 음색,가창력은 말할것도 없고.... 그저.,, 갓세정♥♥ 여러분 멜론 스밍 마니 돌려주세요~~~^^

Finally !! When it appeared for the first time in the drama I listened to it for barely 10 seconds and I was like "WHO'S THIS ?!" As expected Sejeong is amazing ❤️

I just realized that the one who sang this was *Shin Ha-Ri* of Business Proposal woahh daebakk

kim sejeong is so talented af

who's vote sejeong from first appear in P101?thank you,you really have a good eyes an ear...you choose a girl can sing and dance well...i really love sejeong voice...

세정아~~~좋다 ㅎㅎ

baru ngeh ternyata ini yg nyanyiiin shin ha ri 🥺🥺🥺 omg

POV: You're here coz she's SHIN HARI of BUSINESS PROPOSAL 🥰💜

i dont watch the drama, but i came here because legend said sejeong sang this xD

Sejeong ❤❤❤

I didn't know Sejeong sang this one until today 😭 Ohmygosh I love this song wow she's amazing

QUEEN OF OST DRAMA💕

sejeong is so precious!!

The Next OST QUEEN is Kim Sejeong 👸👸👸

I I come here because Sejeong~~~

i knew kim sejeong since school 2017 and then found out she was an idol and she could sing and i watched her new drama buisness propasal , got this girl is talented i love her

와 역시세정이♡♡♡

드디어 노래가 나왔댜❤

So proud of sejeong

아이오아이 팬인데 한창 아이오아이 활동할 때 이 드라마가 나왔고 평소에 드라마 잘 안봤는데 이 드라마는 정말 수목 만을 기다리면서 살았어요 근데 세정님께서 ㅏ딱 ost 불러주시고 이 노래는 정말 제 인생곡 ... 생각날 때 마다 들으러오는데 아오아 생각도 많이 나고 세정님 목소리에 치이고 푸바다 스토리도 촤라락 생각나고 ... 다 갖춰진 .... 말로 표현못해요 이 느낌 ㅜㅜㅜㅜ

God Sejeong blessing us with these ballad songs 😍😗😙😘

김세정 진짜 대단하다. 마지막 클라이막스 진성으로 지르는 부분 음색이 너무 맘에 든다.

her voice gives me shivers. Like she's talking to me with so much emotions

세정님의 감성적 목소리 사람 미치게 하네요 ㅠ 개인적으로 세정님의 이 노래 넘 좋아요 😀 세정아, 사랑해 💚💗