G#2 ~ G5 (2 octaves, 5 notes and 1 semitone)
Eb3/E3 ~ F#4/G4
Light Lyric Tenor
- Strongest vocalist in Boyfriend
- Sense of pitch is mostly quite controlled
- Shown good improvement since debut
- Support is present consistently up to F#4, occasionally G4
- Resonance can be produced
- Support is present down to Eb3/E3
- Falsetto can be relaxed up to C#5
- Natural vibrato is produced
- Placement has improved considerably
- Transitions into falsetto are clean and accurate
- Tends to sound uneven in his mix
- Larynx raises above G4
- Tends to get whiny and tight in his falsetto above C#5
- Runs are mostly sloppy
- Posture issues can happen keeping him from proper breath support
- Still tends to have some issues with nasality
- Tends to push with his throat when attempting to be chestier
- Tension can happen within his supported range with the “Aye (애)” vowel
- Lower register: Generally able to maintain tone and support with good vocal cord connection down to F3 and support is kept even as low as Eb3. Below Eb3, tends to lack connection and his voice becomes quieter and less supported.
- Mixed register: Mixed voice is mostly relaxed up to F#4 and support is kept with consistency, with moments of support up to G4. Resonance can be produced but above G4 he tends to mostly strain with an uneven mix and a high larynx.
- Upper register: Falsetto is used most of the time, although he’s been able to show a relaxed and controlled approach when singing softly. As he adds more volume, he tends to sound tense and become whiny.
For the most part in his vocal performances, Hyunseong shows little influence by R&B artists. Most of his vocal performances tend to be more standard in sound and cleaner in approach, so there are very few moments in which he attempts to sing any songs that are challenging in terms of agility. The few times he’s attempted singing vocal runs, however, it is possible to hear a tendency to slide through his runs and much like other idols, not sing every note separately and individually. Instead of taking the time to learn the correct pattern of notes in a vocal run, he chooses to rush through them instead. In slower melismas, he’s able to keep the correct muscle memory to rhythmically separate each individual pitch, such as in “Talking to the Moon“, but as soon as these runs require more speed, it results in a sloppy and somewhat pitchy execution instead, as heard in “Some” and “Want to Want Me.”
Hyunseong debuted as the main vocalist of Boyfriend in 2011. He has since released one solo single for a drama OST and participated in the musical Joint Security Area. Unfortunately, Boyfriend haven’t received much exposure vocally which does not allow Hyunseong to showcase his vocal ability on TV much. His voice is light, boyish and soft in tone, lacking much harshness and being quite generally bright. His voice would most likely fall into the light lyric tenor fach.
His lower range is a less explored portion of his voice when looking at his repertoire as a member of Boyfriend. In most of their songs, he tends to sing the higher lead parts and the more challenging lines, keeping him from exploring his chest voice much. As a result, when he gets the chance to showcase the lower extent of his chest voice, it often sounds airy and underdeveloped. Support is present with the proper balance of the connection of his vocal cords and a relaxed approach to his singing, but as he descends in range he tends to whisper his lower notes. Often stylistically, he adds breathiness to his tone when singing lower, but he has shown that he can keep tone down to C3 and C#3, as heard in “오직 너만을.” Support has only been shown with enough consistency down to F3, as heard in “My Way“, E3, as heard in “이게 사랑일까“, “걱정말아요 그대” and Eb3, such as in “오직 너만을“, “가수가 된 이유” and “황금별.” Below that, his voice becomes more air than tone and the proper connection of his vocal cords is lost, as heard when he descends down to B2 in “이게 사랑일까“, A2’s in “걱정말아요 그대” or G#2 in “그 남자.”
His mixed voice is where most of his improvement has been heard over the years. In terms of mixing, Hyunseong has always favored a lighter mix with less chest voice. However the softness and lightness of his mix weren’t the characteristics shown when singing higher, as he would often keep his mouth somewhat closed when singing, not fully dropping his jaw to allow sound to come out. Due to that, his voice would then come out partially from his mouth and partially from his nose, causing him to sound blocked and nasal. As his career went on, he’s shown more improvement in this area, where now he’s able to use the proper jaw position to project his voice and eliminate nasality. As such, he’s been able to also allow more chestiness in his mix for more changes in dynamics, and also learned to properly lift his soft palate, being able to produce resonance in his mix, as heard by the E4’s in “To Me“, F4’s in “고백“, “오직 너만을“, “홍보병의 날“, F#4’s in “황금별“, “그 남자“, “가수가 된 이유” and G4’s in “황금별” and “오직 너만을.”
Above G4, however, his mix still tends to sound somewhat tight and bright. He’s unable to blend the right amount of chest and head voice in his mix, favoring a lighter and headier approach as he sings higher. This may minimize the vocal strain on his voice, but he still has the tendency to let his throat close and his larynx raise above G4, becoming tighter and squeezed with a high larynx, as heard in the Bb4 in “오직 너만을” and G4’s in “같은 시간 속의 너.” When adding more volume to his voice, strain becomes more apparent as he tends to then have a more shouty and pushed quality to his mix. This can happen even when support is present, such as the G4’s in “황금별“, but mostly happens when support is gone and mostly tension takes over, as heard by the G#4’s and Bb4’s in “가수가 된 이유“, G#4’s in “걱정말아요 그대“, A4’s in “Trippin’“, “JANUS“, C#5’s in “Twinkle“, D5’s in “같은 시간 속의 너” and F#5 in “What Do You Want from Me.”
His falsetto is relatively used well and he mostly transitions without problems. He’s able to sing in falsetto with a relaxed throat up to C#5, as heard in the B4’s in “Talking to the Moon” and C#5’s in “One Day“, and able to transition with a soft approach and a good sense of pitch, as heard in “忘れないで” and “You’re My.” Above C#5, he tends to use a slightly more mask placed approach, favoring a push of air as opposed to the right amount of breath support. This causes him to sound more shouty and squeezed in his falsetto, as heard with the G5 in “Want to Want Me.” He’s never shown the correct muscle memory to connect his vocal cords together with breath support to produce a more connected head voice, adopting an airier and less connected approach where breath support is not present.
Musically, Hyunseong has the right amount of dynamics and has shown good control of his instrument stylistically. He’s able to choose when to open up and use a more well placed sound in his mixed voice, such as when he sings musical theatre songs, and when to sing with a more pop-like approach in a slightly more nasal tone. He also knows when to favor more power, less power or airiness in tone. He’s able to show a good understanding of how to produce a natural vibrato as well, allowing him to maintain a relaxed jaw and larynx. Technically, he still tends to have an unbalance of chest and head voice in his mix which can cause him to sound shouty when trying to add more power to his voice, which can lead to some vocal damage. He also tends to have improper posture when singing, which makes it harder for him to breath properly into his diaphragm.
As a vocalist, Hyunseong has shown interest in his craft and good work ethic. Consistency is present not only in his technique, but also in his improvement. He’s been able to develop his breath support better throughout the years and fixed issues with placement and pitch. He’s a young vocalist with a promising future who needs more opportunities to motivate him to further improve his singing as his career goes on. For the future, he should focus on how to properly balance his mixed voice and to explore the full extent of his lower range, as well as being given the chance to appear on shows such as King of Mask Singer and Immortal Song 2, to further showcase his vocal ability.
For the most part, Hyunseong is not too risky in his vocal performances. He doesn’t often try to go out of his way to create a new melodic line within a song, instead choosing to stick to the original composition for his performances. He favors singing with accuracy and precision, as opposed to attempting to add his own ideas to performances. Harmonically, he’s able to blend his voice relatively well when singing harmonies as well, as heard in “바래다주는길.”
Average to Above Average Vocalist
Best Vocal Performance(s)
Analyzed by Ahmin (Kitsunemale)