Solar's voice is perfect for this drama. Her voice is like honey which just flows so smoothly. The whole atmosphere of this drama is warm and cozy with a bit of laidbackness and that's what the song reminds me of. It's perfect to listen to when you're just relaxing in the evening with a cup of coffee.

This is Mamamoo's Solar First Solo OST! So proud. Her voice and this song are amazing and puts me in such a calm mood

Listening to this song is like Solar welcoming you home with a big hug after a long, hard and tiring day. You can feel the warmth and comfort in her embrace. And she tells you everything is okay, everything will be fine as long as you're with me.

I REALLY LOVE SOLAR'S VOICE, SHE IS SUCH A VERSATILE SINGER!! SHE CAN SLAY THOSE HIGH AND POWERFUL VOCALS BUT SHE CAN ALSO GIVE US THIS KIND OF CALMNESS 🥺❤ YONGSUN UNNIE 제일 짱이야!!

Solar's voice is fitting for everything, she's an absolute ace

You won't believe me but I listened to this song 300x on spotify for 2 days.

So happy that Kim Yongsun did not become a flight attendant. Solar’s singing voice is Heaven-sent and her personality is wonderful. We are indeed fortunate.

Solar's singing perfectly captures the symbolism of the blue bird as a harbinger of happiness and joy. There is a sadness over the struggles of the moment, the invitation to make a choice that can change things for the better, and the sound of hope. As the exceptional vocalist and storyteller she is, Solar makes this song a complete and compelling emotional journey.

this drama is highly recommended, this drama is a must watch!

Solar is one of many best singers in south korea.. Her vocal is amazing.. Strong and angelic, so beautiful

Solar’s voice is just so soothing.

Leggo moos SOLAR talked BLUE BIRD yesterday to her live and she love this song.

Solar’s incredibly beautiful vocals matches the instrumentals so perfectly. Blue Bird is simply one of the best OSTs this year.

Is this Solar from Mamamoo? It suits her very well!

This song is my current addiction! The song is so beautiful! And SOLAR’s voice is so beautiful!!! 💖💖💖 My neighbors probably think I’m being weird again listening to this on repeat for hours when I’m home 😂😂😂 Well it’s beautiful. 💖

무무가 아닌 경우 일반적으로 솔라 하면 가창력이나 성량만 떠올리는데 갠적으로 이 노래에서 비교적 살살 부르면서 음색 살린 거 같아서 너무 좋다ㅜㅜ

이 드라마 보다가 노래가 너무 좋아서 스피커에 귀를 갖다 댄적은 처음이네. 솔라 음색 미쳤다.

She is such a versatile vocalist, This is giving me Solar gamsung vibes, her soft angelic vocals really do wreck my heart. Her first solo OST, hope she gets the deserved recognition for this masterpiece.

Solar’s First SOLO OST 😭💖 Solar never disappoints! 😭

Solar sings this song so beautifully, it makes me wanna cry 🥺💖💖💖

Fact :- solar voice can give you so much warmness in cold weather ❤️

Kim Yongsun's voice is like a dream

Can’t get enough of Solar’s beautiful vocals. The song suits her so well

What I find unique in solar is that she can perfectly execute both high and low notes ... ALL RESPECT FOR HER ❤

We need more Solar OST'S. This is absolutely beautiful - I've been listening to it every day since it's release.

I've been listening to solar's ost ever since the day it was released, I'm glad there is mv now 🥺

Solar's voice is comforting

Love this drama, love solar.

Of course, we are never disappointed by solar! 😻

yes that is our nation's vocalist right here 😌

Solar has a powerful voice, but what makes her one of the best vocalist in Kpop is that she can also sing with great emotions and depth, which are not easily achieved unless you are very talented. This is what makes Solar unique and amazing.

Solar's vocal so ethereal to my ears. Like soothing warmth of sunset rays against my skin. Curing every dried tear i cried when i saw yesterday hate posts towards my girls.✨ :)

It's that type of song where I would listen to after a tiring day of work at the office sitting outside the restaurant getting some fresh air along with some beers

SOLAR THE BEST!!!!!!😭❤️❤️❤️❤️❤️I LOVE HER🥺❤️VERY MUCH

Solar's Bluebird OST is so good, it is so warm and soothing it just makes you melt! 💕

at first, i loved this song because solar absolutely slayed my heart with her voice. but today i figured that i would give the show a chance. i am 2 episodes in, about to start #3 and i aint mad about it!

Solar sing a song so well💯💯

Such a perfect song to listen to after a long day at work. Solar’s voice has so much feels I’ll just swing according to the song’s tempo naturally 🥰

I listen to this while commuting now.. watching as the sun sets down between the buildings and the people bustling out from work as well. The song is warm and comforting, I think to myself "ah.. everyone is hanging on in their own lives as well". We're all birds trying to go somewhere higher.. but we all get tired as well.. so don't forget to rest sometimes. I love this song, and I like the drama as well.

Solar's voice is just a chef kiss

Solars voice fits every single genre of music

Solar is perfect for this 🙌🙌❤️

Proud being Moomoo , When most of them doing their solo OST waiting for moonbyul ♥️

Her voice never lacks to bring me calmness, happiness and a smile on my face. I love you, Solar ❤️

For everyone who's ever thought she was just a powerful belter, listen and be amazed

Solar's vocals are so powerful and smooth, it seems to caress my ears✨

Solar best girl i really love her soft voice

I know you keep coming back to this

My gad...solar's voice is so smooth and really suits her. Please more Solar OST.

Back to this gem after listening to the new 'Exit' OST by Solar. She really manages to bring the right emotions to every ost, it's crazy how versatile she is.

Solar’s the best😭❤️ I love her so much

THAT IS WHY WE LOVE SOLAR, WHEN SHE SINGS YOU FELL IN LOVE WITH HER VOICE ,DEFINITELY SHE IS ONE OF THE BEST KOREAN SINGERS...

OMG this song just perfect for Solar, Mamamoo vocal really not to be skip

노래 자체 멜로디도 가사도 좋고 힐링되는 음색여신 용선언니 음색이 조화를 이루는 Blue Bird 최고💙

Solar's voice is like a heaven❤ Moos were simply got healed after listening to this OST 😶

SOLAR VOICE IS TOTALLY OUT OF THIS WORLD.

I remember while watching the drama i always waited for this song… Perfectly suits the first scene they played it… One of the best 2021 drama

This comment section is all about our talented artist SOLAR

Yongwangnims let's stream this song pls. This is her first solo ost.😭😭😭

What do we expect she's SOLAR 💖

This song is just so nice for the heart. Solar's voice is just soothing

cant move on with this kdrama and the ost too, solar saranghae , your voice is amazing and angelic

Solar is perfect .. beautiful.. talented .. has an authentic personality.. natural.. confident .. powerful.. ambitious .. and has a heavenly voice

갓굴을 보면서 갓굴의 미친 음색을 들을수 있다니..💙

용선씨의 이런 목소리 너무 좋습니다...❤

To Solar, our Blue Bird 💙 thank you for always making beautiful music for us. We honestly don't deserve you. As a person that gives us happiness, I hope you're always happy too.

Solar voice made my night a sweet night and a beautiful night ✨

Why am I so addicted to this kdrama? It's like I am looking for more, craving for episode every week!!!!

It's not always that we get such a calm and warm song from Solar. Her voice soothes our heart especially after a harsh day at work

omg this drama is on my list and like always solar do be banging

Just watched Run On latest episode and got surprised because Solar sang this ost. At first, I thought it was Taeyeon. Her voice is so calming and in the bridge, I can hear her real vocal. Gonna add this to my playlist. Thank you Solar for this beautiful song .

Solarrr the best 🥺❤️

This feels like a warm hug. you know that ONE SPECEFIC HUG you crave when nothing is going your way ? when you just want to feel that warmth so you know that it's gonna be ok ?? . Yeah , that's how it feels.

Solar's voice is undeniably soothing. Listening to this song while reading the comments is heartwarming. Hoping for more OST's from her.

Her voice is perfection

the way solar expresses the song is just so on point and her control over her voice is amazing

This song makes me feel things, solar’s voice is...wow

Moomoos & Yongwangnims, please vote for Yongsun in THEKKING app to get b-day ad.We must win this as b-day present for her.

정말.... 용선언니 음색.... 진짜 이노래 들을때는 다른 공간 속으로 들어가는 것 같아ㅠ 언니 노래도 너므 좋고ㅠ 언니 음색도 미친다ㅠ

Her voice is amazing and this song suits her vocals so well

For anyone who doesn't know, there is a special video where Solar sings this song in a beautiful room on Flex M channel

I love the way this song starts

She kind of sounds like Taeyeon, which isn’t a bad thing. They are both awesome singers! ❤️

i don't know why am i crying but solar's voice is everything.

I suddenly remember this ost ..and how the melody is really comforting and music to my ear ..

Solar voice Is....wow ♥️

솔라언니 목소리는 진짜 좋다 🥺❤❤❤ 울어싶어 😭😭

Reasons why you should watch Run On!!! ✓ Story or Plot: I did not expect that I will fell in love with the drama, I just like how it was written. The pacing was neither fast nor slow. It was perfect as it is. ✓Characters: The chemistry between the main leads and even the second lead couple is something that you can look forward to. You will love how they characters develop, their unique personalities were likable too. ✓OST: I am telling you this drama offers not only pleasant but meaningful OSTs. My favorite is this OST. Blue Bird fits perfectly for their scenes. It made the drama more realistic. ✓Dialogues: My gosh, the lines and dialogues were seriously good. It is subtle yet it has all the feels. I love how they delivered it and gave justice to it.

와 용선언니 ㅠㅠㅠㅠ음색 넘 조아 ㅠㅠㅠㅠㅠ

I initially checked out this drama after finding out that solar will be a part of the ost lineup and this drama has pleasantly surprised me. It's fun and not something too heavy so far. I hope the drama and her ost do extremely well🥺

Such a Feel good drama I've never been so invested in a Kdrama before. I love the conversations between the two main leads, some very inspirational messaging. Now add Solar onto that and just WOW. Breathtaking! 👏💙

99% to QUEEN SOLAR's voice 1% to drama......

solar's voice is as bright as the sun! this genre surprisingly fits her tone!

Solar is an angel who fell from heaven.😊

오늘은 진짜 닉값 할래요 제아스하고 무무인 나에게 이런 상을 주시다니...... 드라마 보면서 눈은 행복하고 귀는 더 행복하게 됬어요

음색여신 김솔라💕

런온 너무 재밌고 솔라 언니 목소리 너무좋아❤❤

Solar really fits this country side genre vibes.. This is her first time singing a solo ost and she really gave justice to the song and we are asking for moreeeeeee 💙💙💙 I hope she will have more opportunities to showcase her vocals through singing ost songs in the future.. I will end 2020 with a positive mindset while listening to this song.. Love youuuu Solar 💙🕊

Solar’s voice is seriously one of the best voices out there.

I saw Solar, I clicked