More than the powerful vocals and the brilliant singing, what's so striking was Seung-gi's expression. He looks absolutely happy while singing together with his idols. It's not just his talent nor his looks but his passion for his work (all singing, acting and entertainment) that makes him stand out. Now I understand why he can't choose between these fields, he passionately loves these three equally.

"The boy who use to admire his idol is now an idol for someone else" This got me teary. Proud of you Seunggi

I understand that Seung-gi is the prince of ballads but that man was BORN TO BE A ROCKSTAR. I start my petition for him to release a full rock album. 🙏

i swear LSG is getting better as he age...

Seunggi is just on another level when he sings. Gosh. It's like he eats microphones for a living.

LSG living up to his triple threat nickname. Anything that has LSG in it I'll gladly watch it. This man is S. Korea's gem.

This right here is all the evidence of how phenomenal seungi is! A top class singer! Don't ever doubt yourself again Seungi and don't let anyone ever tell you otherwise!

I’ve read in the comment section that someone used a fitting definition for LSG, and that’s a ‘Perfect Superstar’. Can act, sing and entertain people, he got the visuals, talent, personality and charisma. He radiates positivity and hope. I just love him so. ♥️

Can we take a moment and congratulate lee seungi upon finding love. His voice is amazing ❤️❤️

U know that feeling when u just found out that ur friend is dating and u just can't help but tease him/her and smile like a fool for no reason 😂 .. Anyways wishing all the happiness for Seunggi's new lovelife .. Fighting to our hard working charming man !!!

LSG's voice has a quality unlike any other. At normal range, it can sound husky, wispy, thin, buttery (all in a good way) with a soothing, calming effect - best for serenading - e.g. 1:00. As he moves up the range, his voice has the ability to thicken with a very rich quality - can be clearly heard on longer belted notes e.g. 8:21. In upper range, his voice can explode with immense power, coupled with a wide vocal range and stable vibrato - e.g. 2:06, 10:16. You can even hear metallic colors in his voice. Very good breathing support too. Amazing gift.

Seunggi really has manners, even in singing

After Mouse success I think it's time Seungi dominates music charts again

Seung Gi is everyone's type of guy 😍😍 his voice is soooo calming 🥰🥰🥰

Seung-Gi really has a great gift for singing. He is a born balladeer and a great charisma. For something they nicknamed him as the "Younger Brother of the nation" and what a joy for him to finally be able to sing along with his lifelong idol who encouraged him to sing from a young age. I love the face Eunwoo makes every time she hears Seung-gi sing. He respects and loves his "hyeong" a lot.

AND THEY WONT GIVE THIS DUDE VAGABOND S2?? DAMN GIVE THAT MAN HIS SEASON 2!!

I love how master in the house is always introducing us to these amazing people. It's great to see there is some alternative to kpop as well. LSG as brilliant as usual 👏 ❤

Here after mouse. His singing is as good as his acting 😍😍

It's amazing how Seung-Gi can sing any genre of music! I get the goosebumps whenever he belts his high notes with precise accuracy and vibrato!

LSG returning to his roots as a rockstar. Many of his band mates will surely happy hearing him sing again a rock ballad. A Full length rock ballad album will be better.

I wonder how sung jae will react if he see seunggi performance. Sing rock and hit high note with ease

As a MASTER IN THE HOUSE FAN I'm so proud Seunggi🤘

Who says you're not good enough?You're amazing #LeeSeungGi... #JusticeforSeungGi..you deserve more

Showed this video to a friend who casually like Seung Gi since My Girlfriend is a Gumiho. This video is enough to convince her how great Seung Gi not just in acting but also in singing.

I love how seunggi can make his voice rough but he can make it gentle and clear at diferent time. Just like lee sunhee did 👍

I love Lee Seung Gi as a singer and as an actor.

With every passing day, our Seung gi is becoming cooler than what he already was. He deserves all the happiness in the world. Our coolest, most handsome CEO nim.

Lee Seunggi is a complete package! Great Singer, awesome actor, very handsome....he is the definition of a PERFECT ARTIST! Define Artist: LEE SEUNGGI.

As long as you’re happy, i’ll be happy as well. You deserve all the happiness that this life has to offer, Seunggi. We love you!

We definitely need a new album form Seunggi his vocals never gets old and kept on improving.. Other members of Maester in the House jaw drops once again as they're mesmerized by Seunggi's vocals

This man is absolutely a wonderful singer, I understand 0.01% of korean but that doesn't matter 'cause Seung Gi's voice transmit the feeling and is able to go from soft to strong, high pitch and all those ranges, just wow 🙊. Glad that people know more about other really good ksingers

Lee Seung Gi is so amazing, when he sings, act or even in variety shows he excel in all of them.

That is great collaboration. Seunggi look so happy in that moment. Thats why I can't stop smiling when i watched this episode. For sureee, that is wonderful performance. He did his best. Thank you for your effort seunggi and thank you to everyone involved in this variety show. Hats off👏🏻👏🏻👏🏻

Seunggiyaa, we always support you whatever the path you take. We trust you. We just hope you are happy with her and keep smiling like this clip. A kid that used to idol the rockstar, now you are an idol for someone else like me. I like to rewatch this clip every spare time I have. You nailed it

I can see that music is seungi ‘s twin brother. He truely love singing. What a wonderful voice a gift from God. Take good care of your health stay safe always my family loves you we will support you till the end.

I love lee seunggi’s voice and humor what a talented young man

Seunggi has the most amazing voice and personality. I just love everything about him. And I will always support and love him.

So grateful to know that lee seung gi exist in this era

Everytime Seung gi sings it seems that he transforms into another person. He becomes serious and puts his soul in his every performance.

Just opened YT to let you know that I'm grateful for everything you have shared to us. When I was on my lowest yrs ago, I have found comfort in your smiles, laughs, and songs.. I wish to be of help to you in any way I can at this point in your life. You are a great person and I hope you know that. Surround yourself with people that really loves you, no matter what.. Keep fighting! God bless you and your journey! #LeeSeungGi

It's time for Seunggi to have his own rock song. He's damn good!

Watching Jipsabu every week now I know why Lee Seung Gi has a different smile & aura... He is in love ❤️

How refine in character Kim Kyung Ho to extend his hand to our dear Lee Seung Gi, who responded so well extended with hug, what a lucky LSG to have this change to be with his idol back in his youth!

Seung gi is a man who always gives his best ❤️

Does this not confirm that sometimes life is unfair?😄 why the complete package to LSG? Others have just the looks but have no talents. Others just the talent but have no looks. This guy has all- handsome, intelligence, talents, height, charisma, versatility, etc. As in WoW!!

I love seung gi's voice so much. His voice is so diverse, it can be so sweet and be so raspy and hot 😭 HELLO I'M OBSESSED YES. 😭♥️

i just love love love Lee Seung Gi's singing. That husky, smokey, sexy voice... I AM IN LOVE with his singing!!! Seung Gi ya, if you have no time to produce another album, can we just have an album of covers? I've been spinning The Project in Spotify everyday. my gosh, i wanna hear everything in your voice... TT

I'm so happy knowing that lee seungi were happily dating her gf and find his happiness. I hope that fans accept and give their idols/celebs a full support when it comes to dating. THEY REALLY DESERVES ALL THE LOVE & APPRECIATION.

Lee Seung Gi, Airen will be with you till the end. No matter what I will always support you and your decisions. Fighting! ❤

This Seung Gi lives in my mind rent free, unlimited time 😍

I am a big fan of master in the house! Ever since the show aired from the episode 1, I have never missed a single episode to watch. This episode has become my favourite ever. I have already been watching several times of this episode! I love the 3 masters especially Park Wan Kyu. I love his voice. It’s beyond perfect. Although I cannot understand the lyric, I cannot stop listening to these collaboration songs! Please let the three masters come back again with rock and roll theme! It’s too short to watch.. only 1 episode with these masters. I love Seung Gi, his voice is perfect. He is just perfect. Yang se hyung - you rock ! I love you and your character..

Seungi is an absolute gem in the industry! Won't ever stop supporting this talented man! Stay strong seungi.

i'm really happy when i read the news about Lee seungi oppa... we all know he is amazing man... but still let me wish him all the best

Lee Seung Gi grows a lot. His love and passion for music makes him a great singer like his idols.

Seung gi looks happy,it’s like a dreams come true for him ❤️ His voice really amazing 🙌🙌🙌🙌🙌👏👏👏👏

omg....i am obsessed with seung gi's voice...

He is the most charming man in the world!! The real Prince Charming ♥️ It's a shame that Sung rok isn't here, rock fits him so much.

LSG is the definition of almost perfect person in the world. How can he be great in everything tho!?

With LSG in it, we surely rest assured to expect a masterpiece from him. LSG was gifted with lots of excellent skills and has gained mountainous achievements, which makes me always wonder whether he is an angel in the form of an ordinary guy on this planet. (Btw, Seunggi, am grateful for your existence in this world that completely heal and warm my soul (and others as well, I believe) and encourage me to be a better version of myself.)

Lee Seung, looks gorgeous with this hairstyle and he even glows (maybe because he is in love?). Will always admire him as an actor and singer, he's vocal is sooo.....

Kim Kyung-ho's Forbidden Love. One of Seung Gi's fav song. He sang it flawlessly.

Lee Seung Gi's voice is superb! He's so lit! He knows how to convey the message of the song and I can really connect... I always feel amazed everytime I watch him singing.👏👏👏👏👏

He is perfect, as an actor, a singer, a showman - the most talented artist and a sweet, intelligent and humorous man! I just love him and wish him all the best. May all his dreams come true and may he give us lots and lots of amazing songs, movies and dramas! Thank you for this flash into the Korean rock music, it's a very pleasant surprise, they all have amazing voices!

There is no word anymore for Seung Gi...I am speechless

WE NEED A FULL ROCK BALLAD ALBUM OF LEE SEUNG GI YASSSS!! 🙌🔥❤😍💯

how can this man be so lovable and charming and perfect at the same time. 😭😭😭😭❤️❤️

I swear I keep coming back to these clips where LSG is singing.

I discovered Lee seunggi on 2012 and I've no regret, he made my degree year less stress listening to his voice watching his dramas! Thank you seunggi, im happy for you! ❤️❤️❤️❤️

Cant get enough of his voice... I kept on listening almost all of his songs everyday. ❤️🥰 LSG is the best

Seung-Gi's voice is amazing

LSG nailed it again .. Awesome and impressive. Keep it up and stay humble . You are simply best . Greetings from the Netherlands..

It will be good if LSG and his former band members will perform the song they usually played on their gigs as their band was very popular during their high school years. Teacher LeeSunHee mentioned that LSG band was very popular among teens and girls coz it gives a rock vibes which suits many Korean teens.

I want to give a zillion likes to this video!! omg. I have seen this a zillion times! Thank you @sNack! for posting this.

After Actor Lee Seung Gi, here comes Singer Lee Seung Gi!!! 😍😍😍👏🏻👏🏻👏🏻 This guy gives us so so much content that I have problem catching up! 😂😂😂🙈🙈🙈 So so proud to stan for you because you are so amazing! 🥰🥰🥰❤️❤️❤️ #LeeSeungGi #이승기

Im so happy for him, he achieved his dream and all.. im crying right now but not in pain but happiness. We love you so much seunggi ❤️

at first i only watch this show cuz of Cha Eun Woo,...then now i also follow Lee Seunggi all of his drama ive watch is really a good singer & actor...cant wait for next episode...

A legendary performance! If only I could press the like button each time I listen to this 💚💚💚

i know seunggi can sing but i didn't know he can sing SING like dang the casual and flawless high note change whew

Seunh Gi is one amazing talented guy😍😍 He always give justice to all the songs given to him😍😍😍 Saranghae oppa😍😍😍😍😘

I thought LSG's smile was beautiful but Kim Kyung ho's smile is so warm it just melts you.

What a fantastic performance!! Seung Gi gets his wish to sing with his idols from his high school days. Love his voice ~ he blends so well with the masters. They simply rock!! Awesome!! On repeat, really can't stop watching.👍👍👍♥️♥️♥️👏👏👏

10:24 Eunwoo represent us when we see Seunggi hitting the high notes 😂

STILL LOVE THIS and Chaeunwoo's gapping mouth at the end!!😍

When I heard sing Lee Seung Si, my first thought was marry me.!!!! Such a great singer. Love this songs. 💖

Seungiyaaa you'll have my support always.. fighting!! Updated: I finished it just now.. I'm speechless..seungi just killed it with his Sabu!!//

Rock Ballad prince Seunggi is perfectly amazing 😍😍😍

Lee Seung Gi looks more handsome than usual

Seung gi is so happy😍😍😍😍😍

Lee Seung Gi has been my crush since A Korean Odyssey.

I can't remember how many times I replayed his version of Forbidden Love, and then this.. Luv it

I was landing on my bed while hyping the song, but then when they sing forbidden love, i just lost my shit..holyy i just get up. Omgee, i love them

I am very happy for Lee Seung Gi who sings with his idols 😍

One in a billion man, the one and only Lee Seung Gi!!! ❤❤❤❤❤ what an amazing person he is. Never failed to amaze me everytime. He played so very well in Mouse that I didn't see the usual Seunggi I always watch in MITH. He is in another level of acting, hands down. HUGE APPLAUSE 👏👏 For the singing... man.... I am in awe 😍😍❤❤ for an avid rock music fan like me, finding an artist nowadays with such a masculine and 80's rock vibes voice is so rare, and it is BEYOND AMAZING ❤❤❤❤

I watched the episode live on Sunday and was amazed by their performance, I loved it so much and seeing Seung-gi with a big smile and enjoying it to the fullest made me so happy. Now today I rewatched this performance and cried because I don't know why I feel like we will not see Seung-gi's sincere smile before some time. I want to believe that he is OK and everything will work out for him. I will always support him in whatever he decides to do because he deserves the best and deserves to be happy ❤️.

Seung Gi Oppa never fails to give me such a blessful EarGasm!!Sarangheyo oppa!!!

From ballad singer to rising Rock star...LEE SEUNG GI ! 👍🖤 #airen

As always, Lee Seung Gi is a breath of fresh air!

Lee Seung Gi really a great Singer..He have a beautiful Voice...Perfect

Short hair is best for him looks very handsome.has such a soothing voice!

As a fan since 2013, I am so 😊 to hear the dating news. I just want him to follow his heart and be happy. All along, he is an independent and thoughtful guy. BTW, congratulations to everything in the past few months, dating, winning awards, singing with your idols, filming the historical Mouse drama, hosting Sing Again and lots of wonderful programs and warm people's ❤ under the difficult pandemic situations domestically and locally.