Who was Choi Whee-sung? Details about the K-pop singer and songwriter who tragically passed away at 43

On Monday, March 10, 2025, Korean media outlet, The JoongAng, reported the tragic death of the popular Korean celebrity, Choi Whee-sung. The K-pop singer and songwriter, Choi Whee-sung passed away at the age of 43 years old.

The idol was found dead in his house located in Gwangjin District, Eastern Seoul. As of this writing, Wheesung’s cause of death hasn’t been confirmed by the police agencies.

Choi Whee-sung, aka Realslow, kicked off his musical journey with the debut of his 2002 full-length record Like A Movie. Wheesung is known for tracks such as Insomnia (2009), and Heartsore Story (2011).

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Internet poured tributes for the late singer Choi Whee-sung

Many fans and other K-pop followers filled the internet with their tributes to the idol. While many seemed in shock with the sudden news of Wheesung’s demise, others remembered his contributions to the Korean music industry:

“Wtf is going on , I'm still in shocked? He's truly a gem , rest in peace one of the best R&B singer in S.K !,” commented another fan.

“RIP Legend. His songs are forever in my favorite playlist and in my heart,” a fan wrote.

“Still shocking to me, I listened to insomnia so religiously back then…RIP wheesung,” a fan expressed.

“I used to follow him & Se7en when they were in their golden eras back then in YG. Sometimes I still jam to some of his iconic masterpieces but haven't heard much about him for a long time. R.I.P to one of the best R&B singers in SoKor,” stated another X user.

“Rest in Peace, Legend! Thank you Wheesung for helping to create MAMAMOO, one of the most Iconic Kpop girl group of All-Time! We never forget what you did for our girls!,” another fan commented.

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More about Choi Whee-sung

Choi Whee-sung, born February 5, 1982, is known as Wheesung or Realslow. He was an R&B singer, record producer, and musical theatre actor from Korea. Realslow became a ballad and R&B singer with singles like Can't You, Insomnia, and Even Thought Of Marriage.

After being charged for illegally using propofol in 2020, the singer faced harsh critcism from fans. He received a one-year sentence and 2-year ban due to his 2021 appellate trial.

The musician allegedly prioritized live performances over TV after the court verdict. As reported by The Straits Times, Wheesung was set to perform at Exco in Daegu on March 15.

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