Jessica Jung’s Vocal Analysis


Vocal Range

D3 ~ D6 (3 octaves)

Supported Range

G3/G#3 ~ B4/C5

Voice Type

Light Lyric Soprano


Jessica produces okay, and at times decent, notes up to C5, and occasionally up to C#5 – rarely up to D5. On rare occasions, she has also achieved resonance and/or open-throat in the Bb4-D5 range. Amongst “Girls’ Generation“, she has the most developed chest register.


Jessica is very inconsistent when it comes to lifting her soft palate, therefore, her placement and projection are less than desirable. Though her pitch is between average and above average, she sometimes goes off the center of pitch on simple lines, and in worst case scenarios – entire performances. It is not uncommon for Jessica to go flat or sharp while singing high notes. She is also very inconsistent when it comes to resonance, and quite inconsistent when it comes to overall support, at times. Jessica’s best vocal performance was “Heaven“, with Tiffany, (6-7 years ago) where she belted a supported B4.


Lower Register: at times, she is supported down to G3/G#3, but more often down to A3 and Bb3. Below G3 Jessica voice is unsupported and airy, but the when supported the sound is solid, clean and nicely produced(“Europa“).

Chest Register: Jessica has one of the most developed chest registers in K-POP; when supported, the sound is very solid, forward, and has a very smooth vibrato (at times).

Middle Register: she is supported up to B4/C5, the majority of the time she sings, and up to C#5 at times. However, she is still inconsistent in the Bb4-C5 range. At times, she is able to support herself up to D5, albeit, rarely. When Jessica’s voice is supported in the middle register, it possesses a bright and slightly more womanly quality to it.

Head Voice: Mainly uses falsetto; does all right up until F#5.


Generally slow, but has produced fast runs in the studio versions of songs. Runs are in general, sloppy, not pitch accurate, and lack flow.

Overall Technique

Support and Control

Jessica’s support is average and inconsistent, even within her comfort zone she still has very frequent inconsistencies, which places her lower than others around her level. Above C5, and at times below C5, tension, shrillness, and flatness arises, preventing her from being able to move up in the KPOP vocal ladder. She also, at times, produces unhealthy and forced vibratos; that being said, she has shown to be capable of producing  ok and/or decent notes within the A4-C5 range – and sometimes up to D5.

Notes in the 4th octave (A4-B4) can be accompanied with nice support, decent placement and a clean vibrato. The majority of her open-throat and resonant notes lie within the A4-C5 range. At times, she can also produce ok to decent notes in the C5-D5 range, but more often they are produced in the C5/C#5 area. In the C5-D5 range, Jessica has produced opened C5s,C#5s, one D5, and a resonant C#5.

Sustained notes in the chest voice are normally supported nicely and have a very solid vibrato sometimes.

In her upper extension, Jessica fails to support her voice properly resulting in her producing a falsetto instead of a head voice. Her range goes all the way up to D6, but her falsetto is only acceptable up to an F#5 – above that her voice becomes airy and tight.

Her pitch could also use some fine-tuning as she has the tendency to go off pitch,  in live performances (even on  simple vocal lines) although her sense of pitch has improved.

Tone Production

Jessica’s voice is naturally soft and delicate, with and without a risen soft palate, but with a lowered soft palate the sound is more nasal and lighter. It’s more mature sounding, and fuller, when she vocalizes with a raised palate. Unfortunately, Jessica tends to sing with a lower palate, therefore we barely hear her fuller, and more mature, sounding voice. Besides, when she does decides to lift her palate, it’s on belted notes, and on rare occasions.

Her mixing is more on the brighter side, therefore her belts are very bright, light and girly sounding – even with a raised soft palate, although, at times, her mix is too heady and bright, causing the sound to be weak, frail and lacking in proper projection.

In the lower register, when supported, her voice is creamy and a little bit more rich compared to when she is belting  – which mainly just sounds bright and girly.

The tone of her falsetto is light and delicate, mainly because it’s falsetto is generally weaker than an head voice.


Jessica has improved, slightly, in the B4/C5 area. Her larynx has also become more stable as she produces more acceptable notes, whilst vocalizing in that range, more frequently.


She has shown some musicianship in a few of her solo performances (“Almost“, “Someday“). At times she changes up her lines in live performances.


Average to Above Average vocalist

Best Performance

Vocal Range Video(s)

Video by Ahmin (Kitsunemale)

Video by: Pandayeu (Ohimesama1f)

Video by: Riki Kudo

Original analysis by :Zhx (Andrew)

Updated by: Pandayeu(Alyson)




554 thoughts on “Jessica Jung’s Vocal Analysis

  1. By comparing Jessica’s latest album with SeoHyun’s solo album, it’s safe to say SeoHyun has a better head voice and Jessica has a better falsetto right? I know you want us to avoid questions comparing vocalists but this stucks in my head for a few days. Also it seems like Jessica has a slightly better lower range/ chest voice than the other GG members, a slightly better mixed range (more support on B4/C5) than SeoHyun, shouldn’t she be a tad better than SeoHyun, just curious?

    One more question about Sunny, if she occasionally does better than Jessica and Seohyun on mixed range, and a better head voice than both of them, it’s just the matter of consistencies than kept her from being ranked higher than them? Because I can clearly see she has a supported head voice up to F#5/G5 which none of them has.


    1. What’s a better falsetto? I don’t generally compare people’s falsettos because having a better falsetto isn’t much of an achievement and if Seohyun has a better head voice, she has a better upper register and period. They’re both inconsistent, they both have moments of showing better technique than one another do those can’t account to them being compared as it lacks consistency. Sunny’s lack of muscle stability, support and pitch are more extreme issues than Jessica’s or Seohyun’s. It’s not all about supported range.

      Liked by 1 person

    1. It’s shouty. It’s a studio note so the quality of the sound has more reverb to it and makes it sound more echo-y, but it’s just a bright shouty note, it’s not too shouty because of the brightness but to call it supported is quite a bit of a stretch.


      1. Thank you very much for your detailed explaination. But do you call it a supported C#5? I haven’t got it yet.


  2. If Jessica was to be more consistent up to C#5/D5 and would lift her soft palate more often she could easily be Above Average to Proficient right?


  3. in the analysis it says she’s improved around B4-C5 but could you link any examples of this? I was just wondering because FLY/Wonderland doesn’t seem to really show that improvement, the C5 in FLY (studio and across her live performances) has been strained & high larynx, and Wonderland seems the same overall? I also wonder about her resonance because I can’t really find any examples of it. I’m sorry if I’m asking for a lot too, I’m just wondering really


    1. Actually the Dingo Acoustic version of Fly is one of the times where she had sung better within that range. The analysis cited that actually long before her solo mini album came out, so this improvement in the B4/C5 area is not referring to her mini album release at all. The best belted high notes video in the vocal range section shows her moments of resonance and I have no idea what C5 you’re referring to in Fly, because as far as I remember her belt in Fly is a C#5 which yes is strained as one would expect from Jessica. 4:44 in the best belted notes is a resonant C5, for example. Did you try watching these videos before you commented? I’m just wondering as well, since you said you couldn’t find the examples. I understand this analysis isn’t written like the more recent ones, but the examples and information is still sufficiently addressed and present in the content of the analysis.


      1. thanks for replying- With the dingo one I thought it mostly sounded just softer because it was an acoustic version(and a semitone down from the original so it only went up to Bb4 in mixed voice), I didn’t think it was that much different to the original. But I understand now with the improvement thing, and I watched the best belted notes- 4:44 didn’t strike me as resonant. With Fly too I did mean C#5 too, sorry. It’s just in the best belts video in particular, none of the C5’s and up really sounded that good to me, and even some of the studio B4s had tension on them. In her most recent releases, her C5’s haven’t sounded any better… I guess I’m just wondering what puts her into average to above average now, although she has support down to G3/G#3, so do many of the average singers and I don’t think inconsistent resonance on A4 and Bb4 is a reason to keep her in the category as some of the average vocalists are capable of this too.


      2. Oh that is true, you’re right. It is a semitone down, but the phrased B4’s throughout Fly are all supported, in studio and live as well. Sure they lack openness and Jessica does have inconsistencies with resonance, it’s not something she does often. None of the A to AA vocalists produce resonance consistently or even often, but they have been able to on enough occasions that we know they’re capable of it. Jessica is no exception to this rule. But Jessica does not support C#5, that’s been established. 4:44 if you can’t hear the resonance there, I honestly don’t know what to tell you. Yeah Jessica lacks openness, you’re right. She is inconsistent even within her supported range. I don’t know why you keep trying to put her down, as if these characteristics weren’t true for all Average to Above Average vocalists. All of them lack consistency, lack openness, lack resonance and can show tension even within their supported range. Which is why they’re Average to Above Average and nothing higher. Again this isn’t the first time you ask why she’s Average to Above Average and I’ve already answered this question to you before. What average vocalist has produced resonance on A4 and Bb4? Often enough? Aside from perhaps Sunny, or once for Tiffany, who else?

        It’s odd to me that you keep comparing her to other average vocalists, instead of looking at the bigger picture. Jessica can support up to B4/C5, there are inconsistencies yes but that’s the case with every other average to above average soprano. No average sopranos have C5 included in their supported ranges. None of them have produced resonance, albeit inconsistently, often enough. The reason Jessica and every other average to above average vocalist is in that rating is because they show characteristics of both ratings, inconsistently. Which makes them be in between, they have shown the skill level of both ratings, so they don’t quite fit on one or the other. Average vocalists have not shown characteristics of above average vocalists often enough at all. You keep comparing Jessica to the average rating vocalists, instead of comparing her to other vocalists within the average to above average category who all show similar characteristics as her. I just don’t get why you’re trying to put her down so I’m going to repeat what I said before to you. By your logic, every other average to above average vocalist should also be moved down to the average category due to their inconsistencies. You’re making it sound like Jessica is rated as above average and she is not. If she were, then it would be wrong because she barely produces resonance and above average vocalists have at least a more 50 ~ 75% ratio of resonance being produced. Even Above Average vocalists don’t produce resonance THAT consistently. I think you are looking too deep into Jessica and not looking at the whole patterns that we follow within the ratings for each vocalist.


  4. I think you’ve confused me for someone else, I didn’t compare her to anyone? Nor have I commented before & I’m not trying to put her down that much I was just wondering. With the other average vocalists no I don’t know any others than those you mentioned… maybe Choa and IU? Thanks for replying anyway, I’m sorry if I upset you in some way


    1. Your IP Address matches the same IP Address of a user who also commented on the Jessica analysis September last year. It’s kind of an odd coincidence for both of you to have the same IP Address, both to comment on her analysis only and nothing else, and the fact that both of you feel as though Jessica should be rated as average as opposed to average to above average. Forgive me if you’re not the same user, but there were a lot of similarities so I couldn’t help but to think that you were the same person. ChoA can’t produce resonance and IU maybe produced resonance like once, I wasn’t the one to analyze her so I could be wrong but I did make her vocal range video. You didn’t upset me, I was just going in on detail when it comes to explaining why she is rated correctly. Again with the things you mentioned, all other A to AA vocalists would theoretically be rated down as well. The other user compared her to U.Ji and Tiffany so because I thought you were the same person, I said that. Looking at the criteria and other A to AA vocalists, do you see why Jessica matches that rating?


      1. Oh- well I really don’t think I commented before sorry and I was just wondering what puts her into a to aa I didn’t really say I think she should be moved down. Also it says on Choa’s analysis that she can (as a strength) so that’s where I got that from- and yes I understand now thanks for taking the time to reply to me and so quickly ^^


      2. No problem and I apologize for that. That user said she should be moved down so I thought you were the same person.


    1. There’s nothing to really say. It’s the same old Jessica we’re used to. Mellow, comfortable, nothing new to really say that we haven’t addressed before.


    1. 2:06 There’s nothing resonant about her C5. The vowel is really tight and closed, for absolutely no reason. There is no reason for her to sing an Oh vowel with such a closed throat but she does it anyway and it frustrates me. The 2:20 G4? Yes it’s supported.


      1. I thought it was resonant. Thank you. Another question, if she fixes her issues such as pitch issues within her supported range, consistency on support up to C#5, same consistency on resonance, will she be considered as an Abover Average Vocalist?


      2. Well yeah those are part of the criteria of an above average vocalist. Also you might wanna familiarize yourself with resonance a bit more.


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