A nostalgic sip of childhood is about to hit your playlist. Broadcaster Ji Suk-jin and rising actress and broadcaster Ji Ye-eun have teamed up to form a fresh musical duo named ‘Chungju Ji-ssi’ — and their debut single, “Milkshake (Feat. Wonstein)”, is set to drop on June 20 at 6 PM KST.
A Song That Tastes Like Memory
“Milkshake” isn’t just a cute song – it’s a heartfelt tribute to the innocent joy of childhood, bottled up in a bouncy, upbeat tune. The lyrics playfully romanticize milkshakes as a symbol of forgotten purity and carefree emotions, making it an irresistibly feel-good anthem for all ages. Ji Ye-eun’s clear, youthful vocals blend seamlessly with Ji Suk-jin’s warm and seasoned tone, creating a charming contrast that brings the song to life.
Behind the Scenes: A Star-Studded Creative Team
Produced and written by Rocoberry’s Ahn Young-min, “Milkshake” features a lineup packed with talent:
- Lee Joo-eun (main vocalist of girl group DIA) contributed to vocals,
- Park Shin-won (renowned producer) co-composed the track,
- and Wonstein, known for his silky-smooth voice and emotional depth, added a flavorful rap verse that ties the song together.

A Candid Look at the Creative Process
Ji Suk-jin first announced the project on his YouTube channel ‘Jipyeonhansesang’, sharing behind-the-scenes footage from the recording session. Initially nervous, Ji quickly switched into “pro mode,” nailing high notes with ease and wrapping up his parts in just 30 minutes — a testament to his 33-year entertainment career.
As for Ji Ye-eun, despite being new to the singing world, she radiated enthusiasm in the studio. Her vocal transformation during recording surprised even the producers, earning praise for her bright energy and natural tone.
Wonstein also revealed his lyrical inspiration — comparing “milkshake” to the small, sweet breaks we need in life, reminding us to pause and savor the moment.
A Comeback Worth the Wait
“Milkshake” marks Ji Suk-jin’s return to music after four years, following his time with the project group MOM on MBC’s “Hangout With Yoo” in 2021. With this release, fans are curious — and excited — to see what’s next for the veteran entertainer whose voice shows no signs of aging.
Don’t miss the release of “Milkshake” by Chungju Ji-ssi, available on all major streaming platforms from 6 PM KST on June 20.
Whether you’re in it for the nostalgia, the vocals, or Wonstein’s clever verse, this is one treat you won’t want to skip.