MBLAQ’s Vocal Analysis: G.O.

Vocal Range

G2 ~ G#5 (3 octaves and 1 semitone)

Supported Range

D3 ~ G#4

D3 ~ D5 (with head voice)

Voice Type



  • Strongest vocalist in MBLAQ
  • Able to use sufficient support with consistency down to D3
  • Mixed range is bright and consistent with resonance and support
  • Pitch has improved and is very stable and controlled
  • Has the ability to produce vocal runs with a certain degree of complexity
  • Able to control his placement well for his mixed voice and falsetto
  • Resonance is produced as high as G#4, good placement isn’t lost above G#4
  • Transitions into falsetto have improved overtime
  • Head voice can be supported up until D5
  • Good stable and healthy vibrato is produced
  • Good sense of dynamics

Points for Improvement

  • Vocal runs aren’t always controlled
  • Tries to sing more complex vocal runs than he can handle
  • Lower range lacks support below D3, becomes airy
  • Falsetto can be either too airy or too pushed
  • Mixed voice becomes uneven and overly heady above his second passaggio
  • Strain is present in his mixed voice from A4 and above
  • Jaw tension sometimes present in his vocal runs
  • Head voice is only produced through tension


  • Lower register: The lower range is generally quiet below D3, with enough support is present even if the projection isn’t as ideal as it could be. Below D3, however, the tone is almost always lost and a lot of airiness and disconnection are present.
  • Mixed register: The mixed voice is on the brighter side, with a slight head-dominant to balanced quality and consistent support. Placement is generally good, with a lifted soft palate and resonance happens often in the voice as high as G#4. Above that, the mixing becomes a bit shrill and overly-head dominant, with tension.
  • Upper register: The falsetto register can have a purer sound as high as C5, with ease and control. The higher portion is generally used with added air pressure and tension, placed in the mask with the quality that imitates a mixed voice.


With a style that’s reminiscent of that of other male R&B veteran Korean vocalists, G.O. uses the bright quality of his voice and lightness to his advantage when it comes to his vocal runs. He has a very R&B-like sound to his mixed voice, due to the more balanced sound in his mix, which makes doing vocal acrobatics easier than someone who tries to carry more weight up. Oftentimes G.O. tries to add new melodies and add his own signature style to his songs, by adding vocal runs. These vocal runs technically speaking, possess an adequate level of skill for note separation and he’s able to show the ability to differentiate notes in his runs and still keep a degree of control of his voice, as shown in “못잊겠어요“. This ability to separate notes generally is only favorable when the vocal runs he attempts are relatively simple however when it comes to more complex runs, he tends to lose some of the control and key center, going off pitch by trying to hit more notes faster than his voice is able to, such as in “추억으로 가는당신” and “Wildflower“. Other than issues with pitch, at times his vocal runs also are accompanied by a tense jaw that moves along with the note changes in his runs, which hinders his freedom and control of the muscle memory necessary for vocal agility, such as in “Cracks of My Broken Heart“.  G.O. shows the interest and vocal styling of an R&B vocalist, but he’s yet to master the full control of his voice in terms of agility.

Overall analysis

Debuting as the main vocalist of MBLAQ in 2009, after dropping out of school from being beaten by none other than Girls’ Generation’s Taeyeon, G.O. has been able to realize his dreams as a singer and has shown skill and seriousness in his craft. His voice is very bright, high in tessitura and sound, with lightness and a style reminiscent of vocalists like Brown Eyed Soul’s Naul. His voice is more than likely to be classified as a light lyric tenor due to its lightness, flexibility and passaggi.

The lowest part of his range is generally very quiet, airy and lacks support. As a vocalist who shows influence from R&B vocalists, it is not expected of him to invest as much time in his lower range as he would in his mixed voice. Having  said that, he does show enough adequate support with forward placement as low as D3, even if the placement isn’t always consistent, the support is, as shown in the Eb3’s from “그대 내맘에 들어오면은“, as well as the D3’s in “Play That Song” and “내 마음 당신 곁으로“. As he descends below D3, his voice starts to lose connection with the vocal cords becoming slightly further apart, creating less tone and more air. This is heard in his C#3’s, such as in “못잊겠어요” and his lowest note, G2 in “가슴아프게“.

The highlight of a tenor’s voice is never the second octave, but usually the fourth octave. This is a part of G.O.’s voice where he has shown the most attention to in terms of development and consistency. He is a vocalist who has a consistent amount of airflow and generally relies on a heavier usage of  cricothyroid muscles as opposed to thyarytenoid, resulting in a mixed voice that’s more head-dominant than chest dominant, with perhaps less power but more flexibility and brightness. His mixed voice is consistently supported up until G#4, with numerous examples of resonance and openness, such as the F#4’s in “후인“, “사랑은 이제 그만” as well as G4’s in “너에게로 또 다시“, “사랑의 시” and G#4’s in “여행을 떠나요” and “나란 놈이란“. This resonance isn’t exactly lost as he ascends above G#4, however tension is added to the chemistry causing his voice to sound less free even if the direction of air from the vocal cords into the mask is still applied. In other words, above G#4, he is still able to keep correct placement for his voice, even if support isn’t as strong and strain happens, such as the Bb4 in “Killer” and the A4 in “그남자 그여자“, “남자답게” and in “낙서“.

Another thing that happens above G#4 is the uneven ratio of head and chest voice in G.O.’s mix. Although it’s established that his mix does lean more towards the head-dominant side, he does tend to become even headier as he ascends in range and hence loses the support by pushing his voice with tension in his throat to overcompensate for the lack of power in notes above G#4 thus losing the good placement he has, such as the A4’s “낙서“, “사랑스런 그대“. The higher he gets, the tighter he sounds and the more strain is present in his singing, such as the B4’s in “미련“, “당신은“, C5’s in “추억으로 가는당신” and “거울“.

His upper register is a much more explored register than his lower chest voice and is used with more cleverness than most vocalists. G.O. has the tendency of either using a soft sound with airiness for his falsetto or placing his head voice heavily in his mask to mimic the sound of a mixed voice, as opposed to what most K-pop idol tenor vocalists would do. Instead of trying to push his voice way out of its range to hit high mixed voice notes, G.O. will instead use less tension by more heavily using the cricothyroid part of his vocal cords to create a head voice, that projects well through his mask, in order to minimize the strain on his mixed voice, as heard in the F5 in “Wildflower“,  and the E5 in “사랑은 차가운 유혹“, where he transitions into a more pure head voice tone without adding any mask or chest resonance to it up until G5, with enough freedom to do a vocal run. Although he is able to use a head voice at times by placing his voice in his mask, he does so by adding too much air pressure and tends to close his throat, letting his larynx raise above D5. Up until D5 however he’s able to use a connected head voice with support. His use of head voice can be inconsistent above D5, as he lacks the ability to truly connect and support his head voice when trying to sing softly. Instead he will use a falsetto and will only use head voice if he adds tension and pushes his vocal cords together, oftentimes resulting in less than desirable results like the F#5 in “Monalisa“, where projection and volume are completely lost due to the tension in his throat.

Musically speaking, G.O. possesses a very good control and idea of his voice and is not a vocalist who tries to always add notes that are too high outside his supported range, sticking a range that’s normally familiar to him where he knows he can project his voice well, possesses good placement and good development of tone. His breath control, therefore, shows development and maturity so that he can portray a number of different characters and emotions through his voice by his usage of vocal dynamics and vocal effects. His vibrato is usually very steady, healthy and controlled and is used when sustaining notes very well.

As a vocalist G.O. has shown great control of his instrument within his supported range and good consistency. He is a vocalist who has earned the title of main vocalist in his group and is able to shine well through their songs. Although his vocal level is adequate for that of a solo vocalist, if he is to pursue a solo career in the future, really working on his mixing and vocal agility would be the most important aspects of his voice due to the nature of his style and repertoire, hence allowing for a more versatile and flexible voice in the long run so as to maintain a long term career as a vocalist and musician.


G.O.’s musicianship revolves mainly around his passion for R&B, showing always a Naul-inspired kind of musical idea. In other words, he tries to add runs wherever he can find with a certain degree of complexity. G.O.’s runs are hardly ever random, they’re just sometimes too complicated and hence lack the control of someone with the vocal level of Naul. Another part of this type of style also revolves around very high mixed voice notes added to create more intensity in his songs, such as the added runs in his cover of “Cracks of My Broken Heart” and F5 in “Wildflower“.

Label (Type of Vocalist)

MH Vocalists: Mid-Range Head Voice Vocalists

MB Vocalists: Mid-Range Belters

Best Vocal Performance(s)

Vocal Range Video(s)

*F#2 in the video is a vocal fry Eb2

Video by: Josias (eternalsilverlight)

Analyzed by Ahmin (Kitsunemale)

57 thoughts on “MBLAQ’s Vocal Analysis: G.O.

  1. what a lovely morning ^^ this has been for me
    this being the second vocal analysis that I read today .
    did also enjoy the vocal range video and the video which says “best vocal performance”
    his voice has such a likeable timbre/color as far as my personal taste goes


    1. Yeah if you like his voice, you probably would like Naul’s voice too in case you don’t know him. ^ ^ I’m glad you enjoyed it~


      1. I will listen to Naul and see. I have heard of him , but never really did pay attention . I did look over his analysis and he seems intriguing and kind of an intricate vocalist . and also his vocal range video after which I was like O.O , but when I want to listen to an artist I really want to take my time and do so . Not gonna rush and listen to like 1/2 songs and miss out all the goods, ya kno’~~ ? XD


  2. Thanks a lot! I had always thought his falsetto is healthy and piercing in a good way, cause i’ve been trying to follow his style… but the truth has been told… thanks!


  3. Omo! G.O! wow that’s fast. i thought i will wait more longer. thank you for your hard work. Saranghae~
    when they (Mblaq) were debut at the same time with Beast, i always thought (even now) that G.O has better vocal and technique than yoseob. and i remember you said before that G.O is very good vocalist too. actually how far between yoseob and G.O? i bet not that much, right? between lower range, supported area and consistency? please, tell me if i’m wrong, i’m learning. thank you so much


    1. I was told back in the day that G.O. was one of the best idol vocalists and only second to Kyuhyun or something but after listening to his 2011 Immortal Song performance, I can see why someone would think so because he up to G#4 was pretty consistent and compared to most other tenors of that time, he didn’t have much of a competition to prove himself. Also some people regard high notes more heavily than low notes, Yoseob has one of the best lower ranges amongst male idols. They’re not very far apart at all though. G.O. has better consistency in his mix than Yoseob, but Yoseob is a more well rounded vocalist. It’s almost like Son SeungYeon vs Ailee, except G.O.’s mix isn’t Taemin’s…


  4. about g.o’s r&b style. i thought it’s ever mentioned in immortal song that he debuted with r&b co-ed group before he joined mblaq


  5. Thank you for this! I enjoyed
    I’m a bit disappointed he’s ranked below Yoseob but that’s just the fangirl side of me lol.
    I always thought he’s one of the better idol vocalists despite his weaknesses.
    It’s a shame G.O hasn’t done a whole lot of solo vocal performances compared to other idol vocalists (and even non vocalists). He was doing well on IS2 at one point and then he stopped going on the program.

    Liked by 1 person

  6. In my opinion, I think that g.o has a very impressive voice even if he doesn’t have a solid vocal technique. Just like taeyeon, he’s able to express his lyrics and songs/covers really well. He doesn’t need a powerful vocal to impress his audiences. His soft voice melts all hearts!! ❤
    Check this out!!
    https://www.youtube.com/watch?v=UPI1lSzIR4w (Seopyeonje Musical Showcase )
    https://www.youtube.com/watch?v=bDmzEAStu0c (even in my dreams)
    https://www.youtube.com/watch?v=NtjppcFzp5U (Bogoshipda)
    https://www.youtube.com/watch?v=kn78ybWyna0 (G.O and Jang Eunah)

    https://www.youtube.com/watch?v=k3UcxPDrSVs (i love you)


    1. Omg they asked him to show off his vocal range in Chile lol 0:16 in the japanese video, he was a bit flat. Same for 0:28 but it wasn’t like really bad. The video with Jang Eunah was nice in terms of dynamics. 1:15 was kind of flat in Miss You too but it wasn’t too flat. A4 is definitely too high for him. I like the musical one. ^ ^


  7. As an A+, I thought he was competent or AA-Competent, but now that I have read the analysis, I can see why he is less than that. Thank you for analyzing him, and it was very well written 🙂

    Liked by 1 person

    1. Most analyses in this blog site are really frustrating, especially if those are your idols. For instance, I though Bom will be average, Taeyang will be at Daesung’s level and Daesung will be higher than Lee Hi. XD

      Liked by 1 person

  8. Hi there, from around 6mins 15secs of this video onwards, how “high” did Lee Hyuk go and how easy is it to hit such a note for a male/female singer? Hope to see a response. Thank You.


    1. He hit an E5 and slid up to a G5 and was singing constantly around C5’s afterwards. All those notes are very high and not easy at all for a male, or even a female.


      1. Ahmin, how are you? I haven’t asked anything in a long time. haha. I want to keep it short and simple now, or at least try. In the video above this post from the previous question, were the E5 and G5 hit healthily? Was the G5 a whistled note because I hear the chords disconnected?

        Also I was reading on Mariah Carey, and everybody says ”In her prime….(insert comment)”. What exactly happened to her voice? I heard something about nodules. I’ve read about it but no one ever gave a real, definitive answer.

        My other questions involve short video sections on certain notes. I’m trying to get better at identifying strain so I can find it in my voice also. Btw, I am not a Vixx fan, I just got curious about Ken’s voice.

        First is 2: 49 – 2: 58. I can tell the whole thing was strained. He let his larynx shoot up and the vowels he chose made it much tighter. It felt shrill.

        Second is 3: 48 – 3:57. I think it was strained, but I don’t know how much. It was maybe a C5. His head position made it worse. This is actually the best he’s sounded while performing this particular belt. I think it’s because he suffers from uneven vocal mixing because he never hits it consistently. Most of the time the vibrato is off or the sound feels small.

        Third is the most interesting to me. Finishes at 0: 23. How was the run? I thought there was some precision but also some sliding. The high belt was tight and shrill, I think.


      2. No no, G5 as a whistle register? That’s too low for a tenor to enter his whistle register. It was all mixed and just strained actually, different from last time I heard him hit a resonant G5. She had nodules growing up from smoking and stuff, then bad habits with drinking, crazy touring, schedules and oversinging… So she lost her technique.

        Oh that’s okay, I like to watch videos with K-pop singers I’m going to analyze. First one, you’re right yes. The first note was a G#4, it had good placement but it was pushed and everything got heady, tight and strained after. The second one is all right, except 3:50 the note seemed potentially resonant, that G#4, except it had some tension and it was a bit pushed with good placement. The runs are quite messy and he’s trying too hard.


      3. Thanks, Ahmin. Thanks for the tip, I’ll try to keep my questions related to the vocalists that you will analyze in the future or some really good vocal moments from other moments. Do you ever get annoyed by the lack of effort by some vocalists in KPOP? In my case, Vixx is the annoys me vocally. The main vocal’s low notes are puffs of air. I don’t think they can support below E3. And one member was admitted into the group through his good looks alone and has the most dreadful nasality I’ve ever heard. So massive nasality and puffs of air (Except Taemin, his resonant register makes up for it) are my gripe, oh and strained F4s (TAEYANG). He does this weird constipated pause before he belts F4s as if they were the hardest thing in the world, haha. I n some ways I learned from you, If I like the song I can forget the faulty technique. But overall, I owe all my vocal improvement to you and the blog. I hear songs now, and enjoy them, but won’t imitate the singers because they use faulty technique. I’ll use better technique. I was once the most disrespected and most ignored singer in my class, just because I couldn’t hit high notes. I wasn’t that resonant and had a bit of nasality. In the talent show ,I showcased almost no nasality and an octave and a bit more of support and resonance. I think it was D3 to F4. Even then, no one took me seriously.

        Thanks to this blog, Now, no one makes fun of me. I can mix up to F5, so I’m ”great by their standards”. I recently had a small performance as an interlude. Supported every stylistic and airy note (because the song was acapella and I needed it resonant), kept the whole song resonant with an open throat, and reached a G4 to keep it safe and strain free, even though I could have taken it to B4 with minimal strain (But the stage fright was gnawing at me, which is why I didn’t do it). haha, but seriously thank you. As I said before, most singers learn by imitation. Most of the Kpop kids are tired of the blandness their country’s music offers and are shocked by the performance and vocal showcasing of the Kpop world, so they gravitate to it. They end up imitating their vocal heroes and might hurt themselves in the process. I spent two months of Beast Dongwoon and EXO D.o level straining. You saved me from future nodules. These days, I try to go up to C5 for practice but make it short and everything higher up to F5 is once a week. Thanks.


      4. I’m sorry, I was really busy on the 8th so I could not reply to this comment and I ended up forgetting about it. Well of course to some, looks is all you need to get into a group, not everything in the music industry is about skill, often times just having some kind of appeal is enough and I wish luck to all those people, since I believe I’m not of them haha I can only help them as a coach to further develop their talent and craft. I would love it if I could listen to such performances of yours, they sound awesome and I’m so glad to be able to help you in some way or another.


      5. Forgive me , Ahmin. I just realized that what i previously wrote was useless for the blog’s growth or use. I’ll never write something as irrelevant as that ever again. Could you erase it along with this comment as well?


      6. What? no don’t be silly, there was nothing that you said that was irrelevant or would need to be erased. You’re free to comment whatever you like. ^ ^ Thank you for being so thoughtful.


  9. this is really bother me for a long time. i thought i would never mind and just ignore it but i cant. would you like to tell me what the meaning of “dropping out of school from being beaten by noneother than Girls’ Generation’s Taeyeon”? are both in a competition or attending same school? is it in a fight?


    1. Oh no LOL Basically what happened was that G.O. was in a singing competition and he ended up getting second place while Taeyeon got first place and losing that competition is what made him drop out of school to really dig deep into pursuing a singing career.


      1. what a fierce competition they have lol
        i got confused about the beaten word lol

        could it be that somehow taeyeon has inspire G.O to be a better singer? haha
        so basically, both have known each other and does this mean taeyeon was better than him back then and now?


    1. I’ll use this video instead because it’s Youtube. I don’t believe anybody else asked about this yet. The verse only goes down to E3, which is perfectly within his supported range. He sounds great, nicely supported and forward tone in his chest voice. 1:58 the falsetto was kind of in his throat, the mixed voice range for the chorus only peaks at G#4, where he’s very consistent and has a great control of his mix with good support. He is a pretty consistent vocalist in his mix. He sounds really good in the chorus actually, this is a very good key for him. 2:55 again that throaty falsetto. His mix is really well placed. 3:10 and 3:16 ish there were B4’s, those were tight and thinned out but they are outside his supported range, so it’s no news.


  10. oh my God I’m crying right now. Holy shit I didn’t know he had an analysis. MBLAQ is one of my favorite groups of all time thank you. AA is nice I guess but how does he compare with the other male aa vocalist. (Sorry for the overreaction I wanted to request him but I don’t like requesting people since you’re busy already but you already did it) I thought you didn’t do them because they’re not popular anymore 😥😢


  11. well it means that he used to be the strongest above average vocalist then. now that he move up, he must be the least skilled vocalist in his now category. actually what makes you sure he was misrated? like what thing he has over above average vocalists?


    1. It was his head voice that I overlooked and the consistency of openness and resonance in his mix compared to any other above average tenor aside from maybe Jokwon.


  12. Ahmin you said that he “Tries to sing more complex vocal runs than he can handle” in weaknesses? or do you mean is that he tries to sing more complex vocal runs than he can’t handle.


    1. The meaning is the same, but the grammar is correct. Tried to sing more complex vocal runs than he can handle means he sings runs that are too hard for him.


    1. No, his performances on King of Mask Singer don’t have any effect on his vocal analysis because he has shown no change in his vocal technique. He is actually only singing within the B2 ~ G4 range, his low notes are really airy but it’s no surprise, but there’s no real challenge for him vocally.

      This one performance is actually mentioned within the analysis, if you don’t mind me asking since I know you said it’s important to you but you said it’s a brief analysis, are there any parts in specific that you’d highlight or any specific reasoning so I can know what to focus on.


  13. Ahmin, what can you say about Thunder.. Sandara’s brother on his vocals like does he knows how to support his voice …. Just curious hope u understand :-))


  14. So sad his voice is nice but he does’nt even care to train it… 😡 well just like her sister.. But I like their voices though:-D


  15. http://tv.naver.com/v/137489
    hi admin did you heard this performce before ^^ ? i really like the song
    0:48 supported D3 |
    0:52 nice E3 |
    1:44 a nice G4 but could been better |
    2:27 supported D3 |
    3:14 nice F3 a bit breathy for style |
    3:27 i would say a bit tight F#4 |
    3:31 a nice G4
    i just highlighted some parts / sorry if my english is so so


    1. He is doing very well considering I haven’t heard him in forever. lol Thanks for the time stamps and your English is just fine!


  16. Hi there!

    I wanted to ask what you think of G.O’s technique in this video (singing starts at 0.45) I know it’s a very vague question (…sorry!) But I’m also curious as to whether you think he’s doing better or worse now as a vocalist outside MBLAQ?

    Thanks for all your work! I am a huge fan of all you’ve done on this site and having started singing classes, I find them so very very helpful as well!

    Thanks ^^


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