How to Sing Like Jihoon (TREASURE): Vocal Range, Signature Tone & Technique in 5 Steps

Jihoon is the member of TREASURE most consistently described across fan wikis and media as having the group's highest vocal range, and his sound rests on three trainable pillars: powerful high-note belting, a pretty falsetto blended into mixed voice, and a clean, textbook delivery that favors honest phrasing over heavy ornamentation. Separate these three skills and his parts become trainable one at a time — even if your natural range doesn't match his.

Safety note: None of the techniques here should cause throat soreness, a pressed feeling in the larynx, or hoarseness lasting beyond 24 hours. Jihoon's high notes are produced through breath support and a trained falsetto-to-mix bridge, not by forcing chest voice upward or squeezing the throat. If you feel strain, reduce volume and rest. Consult an ENT specialist for hoarseness lasting more than two weeks.

Note before you continue: this guide covers Jihoon from TREASURE, a YG Entertainment group — not TWS's Jihoon, who is covered in a separate guide and has a different vocal profile.

Jihoon's Vocal Profile

There is no single, precisely documented vocal range for Jihoon from an official source — that kind of exact figure is rarely published for any idol. What is consistent across multiple fan wikis and media write-ups is a clear ranking: Jihoon holds the highest vocal range among TREASURE's members, a reputation established from the group's debut title track "BOY," where he was given the group's top ad-lib part, and carried through the discography since. Rather than treat an unverified number as fact, it's more useful to study how he produces his highest passages — the focus of the rest of this guide.

His stylistic signature rests on three poles:

• Powerful high-note belting and ad-libs — the top-line moments where he anchors the group's highest pitches with volume and clarity.
• Pretty falsetto blended into mixed voice — a lighter, extended-range technique used to reach and color notes above his belted range.
• Clean, textbook delivery — phrasing that stays close to the written melody rather than layering on heavy melisma, which keeps his high passages sounding controlled rather than showy.

Jihoon's Signature Songs — by Vocal Challenge

Approaching his parts by what they demand rather than by popularity gives you a training order. Transpose any of these into a key that fits your range.

Start with "JIKJIN" to build a stable tone base, then move to "I LOVE YOU" and "MOVE" once the falsetto-to-mix bridge is reliable. "BOY" is the destination, not the starting line.

The 3 Techniques Behind Jihoon's Sound

Powerful high-note belting and ad-libs

This is the production behind the top-line moments he's known for, including the debut ad-lib in "BOY" — efficient breath support feeding a well-closed vocal fold vibration, not forced volume from the throat. The most common mistake is chasing volume before the coordination is stable, which pushes tension into the larynx; the K-pop high notes training guide covers the foundation this needs.

Pretty falsetto blended into mixed voice

Where belting reaches a ceiling, Jihoon's falsetto-to-mix work extends his range further, adding a lighter color to passages like the one in "I LOVE YOU." Developing this means isolating a controlled falsetto first, then gradually adding cord closure to thicken it into a supported mix — not belting every note. The male falsetto and head voice training guide and mix voice practice guide go deeper on this coordination.

Clean, textbook delivery

Rather than layering heavy melisma onto a phrase, Jihoon's delivery — evident on tracks like "JIKJIN" — stays close to the written melody and prioritizes clarity of tone. This is a deliberate stylistic choice: singing "straight" at high volume and pitch accuracy hides flaws less than an ornamented run, which makes it a strong technique for a beginner or intermediate singer to train toward.

How to Train Toward Jihoon's Style

Step 1 — Find your comfortable key first

Run a range test from your lowest to highest comfortable note before attempting a TREASURE song Jihoon sings on. His parts have no officially published range, but almost every song works transposed to fit your own voice, which prevents the strain of chasing an unverified pitch.

Step 2 — Study the delivery target, not just the melody

Pick one song and listen three times: for melody, for where the tone sits between falsetto and mixed voice, and for breath audibility. Identify which mode a phrase uses — clean mid-range delivery, powerful belting, or falsetto-to-mix — before you sing it.

Step 3 — Build breath support before chasing high ad-libs

Jihoon's high notes rely on steady diaphragmatic breath support feeding a well-coordinated vocal fold closure, not throat effort. Bloom Vocal's breath and mixed-voice foundation drills build this base before any height or power is added.

Step 4 — Train the falsetto-to-mix bridge

His falsetto and range-extending mix work depend on a smooth transition rather than a hard flip between registers. Practice sliding from light falsetto into a thicker mixed tone at around 60 percent volume — the same mechanism that lets him convert a falsetto ad-lib to full voice on tracks like "MOVE."

Step 5 — Run an AI feedback loop on a single phrase

Choose one 8-bar passage, record it, and use Bloom Vocal's AI coaching to score pitch accuracy, breath support, and register consistency. Compare playback to the original for registration first, timbre second — the AI surfaces habits, like tension on the falsetto-to-mix bridge, that are hard to detect by self-listening alone.

Situational Adjustments

Practicing Jihoon's Style with Bloom Vocal

Imitating a tone by ear has a ceiling: it's hard to reliably hear your own register breaks while you sing. Upload a recording of a Jihoon passage — the clean verses of "JIKJIN" or the high moment in "I LOVE YOU" — and Bloom Vocal's AI scores your pitch accuracy, breath support, register transitions, rhythm, and expression on a clear rubric, then recommends the exercise to fix your weakest area first. It turns "that high note didn't land" into "your falsetto-to-mix bridge lost support at the transition point — drill it there."

For a broader framework on idol vocal styles, see the K-pop idol vocal style analysis. For another TREASURE member's approach — rap-focused rather than range-focused — see how to rap like Yoshi.

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References

• Titze, I. R., & Verdolini Abbott, K. (2012). Vocology: The Science and Practice of Voice Habilitation. National Center for Voice and Speech. [Breath support and cord closure mechanics across falsetto, mixed, and full-voice registers; subglottal pressure in supported high-pitch phonation.]
• Sundberg, J. (1987). The Science of the Singing Voice. Northern Illinois University Press. [Register transition mechanics, including falsetto-to-modal bridging, and their dependence on breath support rather than laryngeal force.]