Dia’s Vocal Analysis

Vocal Range

D3 ~ F#6 (3 Octaves and 2 notes)

Supported Range

A3 ~ D5/Eb5

A3 ~ A5/Bb5 (with head voice)

Voice Type



  • Able to support her voice consistently
  • Support and resonance are present up to D5, occasionally Eb5
  • Only known idol to be able to use her whistle musically
  • Able to produce a resonant head voice up to A5/Bb5
  • Possesses a degree of flexibility when doing runs
  • Able to stylistically choose between falsetto and head voice at will
  • Lower range shows support down to A3

Points for Improvement

  • Vocal runs generally lack precision and are often too complex for her
  • Tends to sound shouty above D5, with a high larynx
  • Chest voice is underdeveloped and airy below A3
  • Has the tendency to go nasal when singing
  • Head voice has yet to be fully showcased above Bb5
  • Whistle register may not be very developed
  • Her vowel shapes can cause her to sound tense, notably 오 (Oh) and Eo (어)


  • Lower register: By far her least developed register. She tends to sound quite airy and loses projection very quickly as she descends below A3. Down to A3, connection and support are present consistently.
  • Mixed register: A very comfortable area of her voice, ever since she was young support was present up to D5. Mixed voice is balanced and resonance is produced up to D5, and Eb5’s occasionally. Above Eb5, she tends to sing with a high larynx.
  • Upper register: Her head voice is well developed and she has the complete control of when to use a head voice or falsetto. She is able to produce head resonance in her head voice up to Bb5, but above that it’s still unknown.


Since her early debut, Dia has shown that she’s influenced by divas from the 90’s and early 2000’s such as Mariah Carey, Whitney Houston and Christina Aguilera. As such, she’s always shown an aptitude for belting and for runs. Throughout many of her performances, she often attempts to sing runs and in her covers she tries to them as close as possible to the original singer’s version. In her case, she possesses a good understanding of the muscle memory necessary to do runs, as her voice is flexible and the rhythmic bounce from one note to the other in her runs is actually pretty clear. Every note is hit without her sliding through them, however the issue comes with the complexity of runs. Slower runs or quick melismas are produced quite accurately, as heard in “I’m Not the Only One“, “가로수 그늘 아래 서면“, “길에서“, “Hero” and “Nothing Better.” However, the longer, more complex and quicker the runs get, the more difficulty she has in executing them with precision and she becomes pitchier, as heard in “Come On Over“, “I Turn to You“, “Another Boy“, “Slow Motion” and “Beautiful.”

Overall analysis

Dia originally debuted in 2009 as a solo artist, before re-debuting as the main vocalist of disbanded idol group Kiss&Cry. Originally, Dia was known for her vocal ability, even debuting at the young age of 17. During her earlier years, Dia created a special sketchbook titled Dia’s Sketchbook, where she’d take in requests of fans and then sing covers of songs that requested. Not only that, but she’s also been able to participate in many TV shows such as Yoo Heeyeol’s Sketchbook as well as Immortal Song 2. Her voice is bright and light, generally sitting in a high range. Without a doubt a soprano, Dia uses her naturally high range to her advantage accompanied by her good understanding of vocal technique.

The lower part of her chest voice is by far the least developed part of her voice. Her main issues don’t truly have to do with a lack support as much as they have to do with a neglect of developing her chest voice muscles. Down to A3, Dia produces consistently supported and projected tone, as heard in “울어볼 가슴이 없어.” She may lack in terms of chest placement, but not support. However as she descends below A3, her voice becomes quickly airy and unclear. Her muscles sound rather underdeveloped, causing her to be unable to sing below A3 with much tone or projection. This results with a rather significant portion of her range being rather quiet, weak and untrained. This can be heard by the G#3’s in “Take a Bow“, G3’s in “I Have Nothing“, F#3’s in “If I Were a Boy“, F3’s in “Let it Go“, E3’s in “날 위한 이별” Eb3’s in “나만 몰랐던 이야기“, “이젠 그랬으면 좋겠네” and D3’s in “Nothing Better.”

Her mixed voice is where Dia seems to be most comfortable, as she usually sings with a rather opened, full and well placed sound. She has always been able to show a good understanding of maintaining her throat opened, while using the right amount of breath support to control her instrument even at the beginning of her career. Combining that with her ability to direct the airflow from her voice directly into her mask (nasal cavities) while keeping her soft palate lifted, allows Dia to produce consistent resonance without sounding nasal. At times she may also show issues of nasality when singing phrased notes, but for the most part sustained notes are opened and clean.

Dia’s support in her mixed voice is consistent all the way up to D5, with some inconsistencies happening as she approaches Eb5. In multiple occasions, she has shown that she can produce resonance up to D5 without much trouble and when phrasing Eb5’s, she is able to maintain support and a relaxed throat. This can be heard with the A4’s in “I Have Nothing“, “떠나지마” (Tasha cover), Bb4’s in “길에서“, B4’s in “하루종일 비가 내렸어“, “떠나지마“, C5’s in “사귈만큼 사귀었어“, “날 위한 이별“, “이젠 그랬으면 좋겠네“, C#5’s in “Let it Go“, “Paradise” and “길에서“, D5’s in “Lady Marmalade“, “시간아 멈춰라“, “니가 돌아오면“, and Eb5’s in “Slow motion“, “떠나지마“, “이젠 그랬으면 좋겠네”, and “Paparazzi.” As she approaches Eb5, her throat starts to close and she starts to have issues with support. This can lead to inconsistencies accompanied by her tendency to close her throat when singing notes with the Oh (오) or Eo (어) vowels, even within her supported range, as heard in “Let it Go“, “Another Boy“, “If I Were a Boy” and “I See You.” Above Eb5, she has never shown the ability to maintain an opened throat and generally strains her voice with throatiness above that. This is heard with the E5’s in “모던하게“, F5’s in “사랑에 미쳤어“, F#5’s in “그런일은“, “웃어봐“, and G5’s in “Lady Marmalade“, “모던하게” and “Domino Game.”

Her upper register is an area of her voice where she has shown quite good development and support throughout the years. For many young vocalists, their upper registers tend to be a falsetto and not many are able to sing with support in that register. Once support and a connection of the vocal cords has been established, they’re able to produce a connected and supported head voice. Dia not only has been able to achieve that, but also mastered her control of her vocal cords to the point where she’s able to choose when to sing with a falsetto or head voice at will. This can be heard when comparing the F#5‘s in “Nothing Better”, with the A5‘s in the same song. She not only is able to support her head voice, but also produce head resonance in it as well. Examples of her head voice include the Eb5’s in “가로수 그늘 아래 서면“, “Paradise“, “떠나지마“, as well as the A5’s in “Nothing Better“, “이젠 그랬으면 좋겠네” and the Bb5’s in “모던하게.” Unfortunately, it is unknown whether or not Dia can still maintain support above Bb5, as she’s never sung above that with her head voice.

One of the most unique things about her singing in the world of K-pop has to do with the ability to use her whistle register in songs. Physically speaking, having a whistle register is actually not uncommon as most, if not all, females actually possess the muscle memory in their vocal cords in order to produce a whistle register. Being able to use a whistle register doesn’t necessarily make a vocalist great, but being able to use it well musically and developing it well do. Dia’s use of her whistle register is quite rare but has been done so live, as heard by the F#6 in “웃어봐.” It is unknown whether or not she has the ability to use her whistle register well, as she’s not done so enough to be able to tell. This may indicate that she does not possess full control of her whistle and may not be fully confident with using it live. Nonetheless, it is notable enough to say that Dia is the only known female idol to be able to use her whistle in a song, as opposed to singing with a high falsetto or a high head voice.

Musically she’s also able sing well in terms of stylistic onsets as well as the proper control of her breath support to sing with dynamics throughout songs. This helps her convey the messages of songs better, as her control of her instrument makes it so that she can change her voice depending on what song she’s singing. Technically speaking, Dia is certainly amongst one of the most skilled vocalists to debut in K-pop to date. Even at such a young age, she’s always shown good technique and good control of her instrument. That is not to say that she still doesn’t have room for improvement. For the future, improving her upper mixed voice as well as fully exploring the full potential of her chest voice could help her develop her overall instrument a lot more. Not only that, but also working on patiently breaking down runs and practicing them at a slower speed before attempting them at the original speed could help her better her overall performances. Perhaps being able to participate in shows like King of Mask Singer could allow her to become more known as a vocalist, when she does make a comeback.


Dia is able to harmonize quite well and although debuting as a solo artist at first, she’s shown that she could adapt to being part of a group and knew how to blend her voice with her other members in other to create well balanced harmonies, as heard in “가로수 그늘 아래 서면.” Likewise, when singing duets, she can also handle containing the power of her voice and keeping a steady volume throughout, as heard in “Falling Slowly.” When it comes to melodic changes of songs, Dia does generally tend to sing more like the true original version of songs, be it a cover or her own song. However that’s not to say that at times she may not attempt to add her own twist to melodies and has done successfully so a few times, even if her overall technique might not have helped her with parts that were too low or too high. This can be heard in “웃어봐” and “Nothing Better.”

Label (Type of Vocalist)

HV Vocalists: High Head Voice Vocalists

MB Vocalists: Mid-Range Belters

Best Vocal Performance(s)

Analyzed by Ahmin (Kitsunemale)


43 thoughts on “Dia’s Vocal Analysis

  1. On the wiki it says she is attending some institute of arts (may not be true), so I hope she does make a comeback. I’m a bit confused, though, since her group already disbanded 2 years ago, why are you making an analysis for her?? (Thanks btw for doing it anyways) Also, one of their vocalists, Haena, is now in another group called Matilda, so is there a chance that you’ll analyze her as well? Ok thats all XD

    Liked by 1 person

    1. Well she is a solo artist, she was a soloist before being in a group and she’s still a soloist. She’s released songs and OSTs after their disbandment. ^ ^ Haena just debuted so her analysis won’t come soon since Dia had years of material prior to KISS&CRY.


      1. Ok, thanks 😀
        Oh, and can you link me the songs, because I’ve been searching everywhere and can only find the girl group DIA, and not anything about her after their disbandment…


      2. Well the songs are in the analysis, the titles are “Paradise” and “I Don’t See My Heart Cry.”


  2. Sorry I’m kind of confused. I mean Dia’s mix is better than Jimin’s (I think) and their head voices seem the same, Taeyeon doesn’t produce resonance in her head voice only support up to F#5/G5, and Eunji has no head voice. They all have better lower ranges than her, but it seems like she edges the three out because of her middle/upper ranges, even though sometimes Eunji and Taeyeon can have some support on Eb5’s, but is it as consistent as Dia’s? Does her lower range bring her down that much? Is she the strongest Competent girl, or is that Jimin?


    1. They’re not as consistent on Eb5’s as Dia, at all. Her lower range doesn’t necessarily bring her down, but it does keep her from going higher. Also nasality which is on and off. She is at the top of Competent.


  3. I always had the impression she would be good since people kinda overrate her sometimes? but i’m happy with her score, her lower range is what dragging her down basically right? she supports som Eb5’s and her head voice is pretty nice so the only thing keeping her from C to G is her lower.. she also seems better then the other C girls considering her mix and upper range


    1. That would be correct. Actually even though she was overrated by profilekpop, they weren’t that far off. She was more skilled than I had expected as I analyzed her and I was quite pleasantly surprised.


    1. Well you can compare her to Shannon, who has quite a bit more than a 2 octave of supported range but is rated good. Dia would have to do just as well as Shannon to be a good vocalist.


      1. Naturally, although I feel like many vocalists become satisfied when they hit a certain peak, typically a point that allows them to do what they want which is probably why most vocalists are between the A/A-AA/AA since that seems adequate for most Kpop songs.

        Liked by 1 person

  4. I wonder how many of those kpop vocalists have sung Nothing Better, cause I can’t stop seeing this song in almost every analysis. Haha, is it really this trendy? I mean, song is cool, I like it, but it gets boring. I am also surprised she tried to sing Carey’s song, they’re challenging after all.
    Good job and see you by the next vocalist:)


  5. Yay a new analysis! I don’t really hear much about Kiss & Cry and from their debut song I think they’re regarded as a vocal group? Do you have any opinion about the other 3 members?


    1. I think it’s a great song, it’s not very vocal since it’s more directed around the fact that she’s singing in a mode, as opposed to a major or minor key. It’s a good song, to me personally.


  6. Mesmo com U.Ji sendo uma vocalista competente, Dia ainda é mais forte que ela? Você tem alguma intenção de analisar Haena futuramente? Qual seria sua classificação?


    1. Eu vou te dar só esse spoiler antes da chart sair, mas sim. Mesmo ambas sendo competentes, a Dia tem melhor técnica vocal que a U.Ji e estaria acima dela. A Haena não parece ser mais nada que average pelo que eu já ouvi dela, e ela pode ser analisada, só é cedo de mais para analisa-lá por enquanto.


  7. Passou de Proficient para Proficient to Good, por que? Dia sempre foi uma Good Vocalist para mim, a potência vocal dela é de outro mundo


    1. Na verdade foi erro meu de julgamento porque agora eu estou analisando uma vocalista que vai acabar sendo proficient, e pensando na Dia, as duas não podem estar no mesmo rating. Em realidade se você olhar no ranking que eu já tenho preparado, não muda nada. Quem tá acima e abaixo da Dia tá igual, só faz ela ficar um pouco mais alta. Em outras palavras ela foi da mais alta vocalista proficient para a vocalista mais baixa em proficient to good.


  8. i remember her being the top competent girl. now that she is moved up, means she is good enough to be on par with younha, younji, and ben. somehow i think there is still a gap between dia and luna. is luna the best girl in this category? or should i have to wait for the chart, which i guess will come out this month end


      1. ups i just re check the list and there is no ben. i thought i saw her name before. shame on me *facepalm

        there is only five of them, younha younji luna dia and chen. these people are quite good tho, and mix voice is their main strong point. yeah, i guess i have to wait the chart for who is better against who haha


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