After his glorious comeback post-Cold Night, Kim Beom-shin proved that the "Four Heavenly Kings" existed before Kim Seong-yoon-jang and that he himself remained undefeated.
As the owner of the greatest voice in Korean pop history—a divine gift praised for its heavenly tone and stability—could he flawlessly replicate a song so challenging even an AI vocalist might stumble?
All eyes turned to his video, and overnight, he skyrocketed to viral fame.
Wow… he’s slaying.
He’s really giving it his all this time.
Kim Beom-shin, known for singing with ease, is straining his veins here LOL.
But it’s a little disappointing.
He couldn’t push the chorus half a key higher despite the vocal flair.
Ugh T_T If he’d nailed that, it’d have been perfect T_T
There’s another flaw too, lol.
He came in late after the high note, transitioning to the next line breathlessly LOL.
Isn’t this level already perfect? What more do you want?
Yoo In wanted a carbon copy of the AI’s “perfection,” so this doesn’t cut it.
Can’t give him full points T_T
Could he have done this in his prime?
Back then, his vocal cords and lungs were stronger, but his technique was rougher LOL. He’d have sounded worse then LOL.
Though his cover was the most impressive so far, it still fell short of the AI’s flawless rendition.
Even Kim Beom-shin admitted regret in the video’s closing moments, wishing someone would succeed where he couldn’t.
At my age, I poured my soul into this song. Is no one gonna take the challenge? Are the Kim Seong-yoon-jang all dead? Call me “Kim Seong-yoon-jang under Kim Beom-shin”—wait, let’s abbreviate it to “Kim-Under-Kim Seong-yoon-jang.” Right?
Nah—he was just taunting them.
LOLOL he’s provoking them hard HAHA
Shortening everything like that is such a dad move ;;
He’s flexing his veteran status to stir drama—will they bite?
Is Kim Seong-yoon-jang scared? / LOL I’d be scared too HAHA / But seriously, Kim Beom-shin’s still got it—he killed that. / Release a new song T_T Something like Cold Night T_T / Kim Seong-yoon-jang, what are you doing? Sing already! / Scared? / “Kim-Under-Kim Seong-yoon-jang” LOL
Whether Kim Seong-yoon-jang noticed or not, Kim Beom-shin’s entry into the Perfect Vocal Challenge ignited a wildfire, drawing more participants. Vocal YouTubers, coaches, and even amateurs joined. Attempts at the second track, Game Changer, surged too. Bands and indie vocal groups dominated, but no idols dared touch the song—likely fearing a repeat of Ril Jun’s infamous flop.
Until one idol boldly stepped forward:
[Could you spare a moment?
Game Changer
—HaDas]
It was none other than HaDas, the “monster girl group” famously nurtured by Alice and Yoo In.
They’re good!
They’re legit skilled.
When one member struggles, others swoop in to support.
Their harmonies are seamless.
Not perfect, but they mesh well.
Wait—even groups at their level struggle with this song??
Was this track even meant to be sung by humans?
Hey, are there any groups who can match their skill?
First of all, Ladies can't do it.
Ladies... 😭😭😭
How did Ladies end up like this? LOL 😂😂😂
Because they messed up one album LOL 😂
Poor Ladies.
While Hadas was receiving all the attention, someone posted on social media.
[@SEONGSEONG
If Beomsin hyung sings this, it’ll work, right?
#BSK #PerfectCoverChallengeGiveMeThisSong1]
His name was Seong Junho.
He was the "Seong" in Kim Seongyunjang.
Having moved from the U.S. to Korea in the early 2000s, he was remembered as the singer who established soul music in Korea.
His second and third albums were hailed as masterpieces essential to Korean music history. The track "Waiting for Autumn" from his second album still lingered within Mango’s Top 100 every fall.
Despite his legacy, his activities had slowed compared to his prime. His most recent release was a digital single six years prior.
Amid the Perfect Cover Challenge buzz, fans grew excited at the prospect of him singing again after so long.
[No personal channel, so he sang on BSK’s platform.
"You Are Me"
song by. Seong Junho]
Seong Junho uploaded his cover to BSK Entertainment’s official channel. But true to form, he remained Seong Junho. The man who famously declared, "If it’s not soul, it’s not music," rearranged "You Are Me" into a soul version—having never sung other genres.
This isn’t bad either!
Junho, release an album already 😭😭😭
At least hold a concert, please 😭😭😭
Oppaaaaaaaa Concert 😭
Seriously, just give him the song! No vocal tricks at all lol 😂😂😂
This song makes my soul squirm somewhere deep in my chest.
Let’s be real—he lowered the key and tweaked the rhythm lol 😂
lol true
Seong Junho was never known for high notes anyway lol 😂
Though reactions were explosive, even he couldn’t perfectly cover Younwoo’s song.
[@SEONGSEONG
Sorry, swallowed my pride and tried the original. Still failed lol 😅 Had to rearrange it.
#PerfectCoverChallenge #ThisSongIsImpossible]
LOL 😂😂😂
This ahjussi keeps it real lol 😂😂😂
Rearranged version’s still good though 😊
Love you, Junho hyung 😊
After the soul pioneer’s attempt, attention shifted to other Kim Seongyunjang members.
Kim Jaebeom might do it lol 😂 His high-note ego’s no joke.
Yoon Yohan could pull it off.
Jang Sehan’s basically MIA, right?
Is it true Jang Sehan disbanded his group and runs an orchard now?
LOL yeah it’s true 😂😂😂
No hope for Jang Sehan lol 😂😂😂
An orchard? 😂😂😂 People’ll think he’s from the Four Heavenly Kings era!
Kim Beomsin already tried—other Heavenly Kings won’t?
The Kings were legendary… but they’re old now. Can they even?
Yoo Jaehyuk in his prime could sing this in his sleep.
Yoo Jaehyuk’s a rocker—too raw for perfection lol 😂😂😂
Even pre-Kim Seongyunjang’s Four Heavenly Kings were mentioned. As if responding, Kim Jaebeom joined the challenge after Seong Junho, followed by Yoon Yohan. Yet none matched the AI vocalist’s flawless performance. The song’s demands—high pitch, technical precision, rhythmic mastery—were simply too steep.
As imperfect covers flooded the internet, Younwoo watched everything. They’d created and uploaded the song on a whim but gained unexpected rewards: data on singers they’d previously known nothing about.
Until now, Younwoo had searched music by genre—ballad, jazz, rock—due to their ignorance of artists. This incident taught them who the skilled vocalists were. Kim Seongyunjang stood out most.
In Younwoo’s world, Kim Beomsin was the best singer. They’d composed the song at a level even Beomsin would struggle to cover perfectly—yet people still tried. To Younwoo’s eyes, some singers today outperformed even Kim Beomsin in pure vocal skill.
Yoon Yohan…
That person was none other than Yoon Yohan.
No wonder—Yoon Yohan’s nickname was “Textbook.”
He was so textbook-perfect that every singer, vocal trainer, and music professor would tell others to sing like him.
Now serving as a practical music professor, he remained famous for retaining the vocal cords of his prime.
But to Yeonwoo, he seemed boring.
His singing felt like a computer-generated AI vocal track.
In contrast, what caught Yeonwoo’s eye was Seong Junho.
Or more precisely, Junho’s beloved genre: soul music.
Soul, younger than jazz, was a style where the vocalist’s voice carried more weight than any other element.
Born from the struggles of Black communities, it was music created to voice their pain and fight for rights.
For the first time, Yeonwoo realized a captivating vocalist could outshine any instrument.
He thought he should try composing soul music someday—but not now.
“…I’m here.”
Time had flown during the Wan.Bu.I Challenge, and February arrived unnoticed.
Yoo Jaehyuk had returned after undergoing surgery and treatment in the U.S.
“I’ve been waiting for you.”
Yeonwoo smiled brightly at Jaehyuk’s voice, which still emitted a red fairy but sounded steadier than before.
“Now teach me to sing.”
Though his voice couldn’t be fully restored, Jaehyuk’s eyes glowed with newfound hope—no longer straining to speak.
“So… no more shouting? You don’t need to do that?”
“I forgot about it during treatment. Now I’m focused on singing with a new technique.”
“Great! Let’s create something together.”
Yeonwoo promptly shoved Jaehyuk into the recording booth.
Eager after recovery, Jaehyuk stepped inside.
In the studio, Jaehyuk’s fairy stood beside Kim Beomshin’s, as if waiting.
Yeonwoo met their gazes.
Can we do this?
The fairies nodded in unison. New ones materialized behind them—Kim Jaebeom, Yoon Yohan, and Seong Junho’s fairies, pointing to themselves.
The Wan.Bu.I Challenge had accidentally built Yeonwoo’s vocal squad.
Yeonwoo nodded at the dependable fairies.
“While you were in the U.S., my aunt wrote lyrics. I also made an AI vocal guide. Listen once and try singing along.”
Jaehyuk frowned into the mic:
—Don’t call me ajusshi.
Huh? He looks my dad’s age or older—what should I call him?
As Yeonwoo tilted his head, Jaehyuk smirked.
—Call me samchon, kid.
“Ah! Okay, Uncle!”
Jaehyuk nodded, satisfied.
“Then don’t call me ‘kid.’”
—My apologies. Should I say “Boss”? “Producer”? “Composer”?
“No! Outside, I’m Shin Yeonwoo!”
He played the guide track. As music flowed, Yeonwoo’s eyes sharpened with unchildlike charisma.
“Inside this studio… I’m Yoo In.”
