F#2 ~ C6 (3 octaves and 3 notes)
D3 ~ F#4/G4
- Second strongest vocalist in BtoB
- Support is consistent up to F#4/G4, issues with consistency due to vowel shaping
- Support is present in his lower range down to D3
- Pitch is consistent throughout his range
- Transitions into falsetto are often smooth and clean in pitch
- Voice is flexible and possesses the correct flow and bounce in vocal runs
- Able to produce a head voice in the lower portion of his range
- Tends to not drop his jaw low enough
- Nasality is often present in his singing
- Notes above G4 become very squeezed and thinned out
- Lower range below Eb3 becomes very airy and quiet
- Issues with tension even within his supported range on closed vowels
- Vocal runs lack precision in pitch and are often sloppy
- Tends to get pitchy when not properly warmed up
- Lower register: Generally supported down to D3, but below D3 his voice becomes softer and quieter, although tone may be present. At times he also lowers his larynx in order to project in his lower range or stylistically.
- Mixed register: Support is very consistent up to F#4 and even G4, although he shows issues with vowel shapes. Above G4 he often sounds squeezed with a high larynx.
- Upper register: At times may be able to produce a head voice in the lower part of his range, but most of the time upper register is whiny as he gets into the fifth octave and he becomes pushed.
As a vocalist, Changsub actually makes an effort to add vocal runs a lot more often some songs may require. His voice is more flexible than his precision, so in the process of doing runs he shows a good understanding of the rhythmic bounce between one note to another, where his voice is clear in his runs. With that said, he is not able to translate the idea of the run in his head into his voice, so the more complex and longer runs are, he tends to perform with relatively good rhythm but often inaccurate pitch accuracy. So his main issues aren’t so much of his inability to sing proper vocal runs, but more of a lack of preparation and a careful thought-process behind his musical ideas. His flexibility but also pitch inaccuracy can be heard in songs such as “With Me“, “그녀에게 전해주오“, “니가 싫다“, “Good Luck“,” 가로수 그늘 아래 서면” and “With Chocolate.”
Changsub debuted as a member of BtoB, and has been part of the vocal line as a lead vocalist for as long as the group has been together. As such, Changsub often takes more challenging lines and has more of a highlighted overall focus throughout their repertoire. His voice is naturally light and bright, with a very youthful quality. His voice lacks in weight and would most likely fall under the light lyric tenor fach, alongside fellow other tenors in BtoB, such as Eunkwang, Minhyuk and Peniel.
His lower range is one of the less developed parts of his range, but support is present there nonetheless. He’s able to sing with slightly better support than the average tenor and has shown good development of his lower range down to D3, as heard by the E3’s in “지친 하루“, “사랑의 시“, Eb3’s in “그녀에게 전해주오“, “소녀“, “With Me“, and D3’s in “어제보다 슬픈 오늘“, “지나간다.” He often chooses a stylistic airiness in his lower range, causing him to often produce softer and less projected notes even within his supported range. However one can hear that below D3, his overall tone becomes much quieter and his muscles lack development to stay connected and project, as heard by the F#2’s in “가난한 사랑“, G2’s in “잊혀진다는 건“, A2’s in “Nothing Better“, “어제보다 슬픈 오늘“, B2’s in “지친 하루“, C3’s in “가로수 그늘 아래 서면“, “여기 있을게“, “후회한다“, “너를위해” and C#3’s in “삼오야 밝은 달.” At times Changsub may show the tendency to lower his larynx and strain his voice in order to better project in his lower range, as heard by the B2 in “Hello.” This seems to be more of a stylistic choice and has not been shown to be a bad habit of his though.
His mixed voice is relatively relaxed and maintains a good sense of breath support up to F#4 and G4 quite consistently. He has never really shown many issues below F#4. The only true issue Changsub has within his supported range is that at times he produces more nasal and tight notes depending on his jaw position and throat shape. He tends to have issues producing more relaxed notes when singing with closed vowels such as Ee (이), Oo (우) and Eu (으). He often tends to have a more closed throat on these vowels even within his supported range and due to not opening his mouth properly, his voice tends to become stuck in his nose, as opposed to projecting through his mouth with a lifted soft palate. However so, Changsub has been able to show multiple times that on more opened vowels he can produce a more opened and clean tone in this range, as heard by the F4’s in “아버지“, F#4’s in “하늘을 달리다“, “듣는 편지“, “어제보다 슬픈 오늘“, “With Chocolate” and G4’s in “사랑 그놈“, “가로수 그늘 아래 서면“, “무조건” and “거짓말.”
His mixed voice above G4 however is where he has a lot more issues. Most of the time his mix becomes brighter and head dominant as he ascends above G4, where his throat also closes as his larynx raises. As a result, the sound of his voice becomes very blocked and squeezed, with an added degree of tension from his throat muscles. This can be heard as many times Changsub has to sing in a higher and more demanding range even within his mixed voice. As heard in the G#4’s in “후회한다“, A4’s in “별“, “매듭“, “겨울이 오면“, B4’s in “With Me“, C5’s in “괜찮아요“, “서울의 달“, C#5’s in “L.U.V.“, “Mirotic“, D5’s in “집으로 가는 길“, “YOU“, Eb5’s and F5’s in “Bolero“, as well as E5’s in “나비무덤.”
His upper register has been shown to mostly be done with a falsetto, or a connected head voice with somewhat shallow support. At times he may be able to transition into a soft head voice in the lower portion of his range, as heard in “사랑의 시“, “삼오야 밝은 달.” However most of the time, he tends to sing with a falsetto and the higher he sings, the more vocal pressure he adds to his vocal cords. In order to compensate for the lack of support in his upper register, Changsub tightly pushes his vocal cords together, closes his throat and adds excessive air pressure in order to sing higher and higher, often singing with a very piercing and sharp sound in his falsetto, as heard by the E5’s in “거짓말“, F#5’s in “Hello“, “울어도 돼“, “With Chocolate“, G5’s in “천일동안” and in their practice room, and C6 in “Mirotic.” Below E5 however, he can often sing with a more relaxed and softer approach in his falsetto even if tension may still be present, as heard in “서쪽하늘“, “忘れないで“, “You’re My” and “Nothing Better.”
Musically speaking, Changsub has a very good ear for pitch and overall dynamic changes within a song. He’s able to stylistic choose between airiness and tone, as well as how to manipulate his larynx position for style. The main issue with his singing is not a lack of skill, but a lack of practice. It’s been known that Changsub often warms up by singing songs that are very high before a performance. This may warm up the voice quickly but he also tires his voice out in the process by singing very demanding songs without taking the time to warm up his voice slowly. Also although cracking may be commonly perceived as a lack of vocal ability, it truly has a lot more to do with lack of warming up or being tired. He only has performances where he cracks and sounds pitchy when he’s not well warmed up and did not take the time to practice the song carefully beforehand.
Changsub’s main issues as a vocalist don’t necessarily lie on his lack of vocal talent or even lack of practice, but lack of good work ethic. He has a natural aptitude for singing and has a lot of potential in range, and has shown great improvement when compared to his pre-debut singing. However since he doesn’t practice the right way he’s unable to progress vocally as much as he potentially could. He has more or less been stagnant since debut and that’s caused by not addressing most of his technical issues. For the future, working on his vowel shaping, as well as monitoring his larynx position and evening out his mix as he gets higher in range will help him further develop his overall singing technique. If he were to fix his diction issues with vowels and maintain a more opened approach in his overall singing, he’d be able to sing with much better placement and produce actual resonance in his overall singing.
Changsub is one of the tenors in the main vocal unit of BtoB. As such he often takes the lead parts or upper harmonies, where he’s able to blend his voice well with fellow tenor Eunkwang, as well as the other baritones in the group Hyunsik and Sungjae. He has shown that he’s a skilled vocalist in terms of acapella harmonies and blending, as shown by BtoB’s live radio “Christmas Medley” and “A Song for Mama.” As for melodic changes and rhythmic changes to songs, he does at times take the liberty of making a song his own, but the result may not always be favorable as issues with strain and pitch are still present, such as in “괜찮아요“.
Average to Above Average Vocalist
Best Vocal Performance(s)
Analyzed by Ahmin (Kitsunemale)