MAMAMOO member Solar mourned the loss of singer Wheesung in her latest social media post.

On the evening of March 11, KST, the MAMAMOO leader posted an Instagram story, reminiscing about her group’s history with Wheesung and praying for his soul.
Thank you for making amazing songs and singing them with us even before MAMAMOO’s debut when we knew nothing. I won’t forget your incredible music. May your soul rest in peace.
— Solar
Wheesung, who suddenly passed away on March 10 at just 43 years of age, has left behind innumerable colleagues in the Korean music industry to mourn his demise.
Singer Wheesung Found Dead In His Home
The singer played an important role in MAMAMOO’s early career as he collaborated with the group on multiple hits, including their pre-debut single, “Peppermint Chocolate,” helping the group to make their mark in the industry in their rookie years.
마마무가 서울신문 주최 ‘Seoul Success Awards 2014’에서 신인상을 수상하였습니다. 가수부분 대상을 수상하신 휘성선배님과도 인증샷 한컷!! pic.twitter.com/L5f7MBP0oX
— 마마무(MAMAMOO) (@RBW_MAMAMOO) November 17, 2014
Hence, for older fans of MAMAMOO, the loss of Wheesung has left a significant impact.
Wheesung (and K.will) is the one that took part in introducing me to MAMAMOO even before their debut, through this song. I don’t really know his songs and how was his career, but one thing I know is he was an amazing singer.
삼가 고인의 명복을 빕니다.pic.twitter.com/U5t8hs6xXS https://t.co/eQhMHo9sqV
— Bil. (@neversteplilac) March 10, 2025
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!#MAMAMOO #마마무 #Solar #솔라 #Moonbyul #문별 #Wheein #휘인 #Hwasa #화사 https://t.co/nU0mvnnsPB pic.twitter.com/kbZ3dT3q6P
— David33 (@SDavid3388) March 10, 2025
Wheesung (and K.will) is the one that took part in introducing me to MAMAMOO even before their debut, through this song. I don’t really know his songs and how was his career, but one thing I know is he was an amazing singer.
삼가 고인의 명복을 빕니다.pic.twitter.com/U5t8hs6xXS https://t.co/eQhMHo9sqV
— Bil. (@neversteplilac) March 10, 2025
Other industry veterans have also posted in memory of Wheesung. Read more here:
Korean Stars Mourn Soloist Wheesung After His Sudden Passing