Lee Jae-hoon of the group Cool revealed he put himself through intense self-discipline to prepare for his first music show stage in 14 years.
On April 3, the KBS2 music talk show The Seasons: Sung Si-kyung's Eardrum Boyfriend features Lee Jae-hoon, Yoon Jong-shin, and Lee Sung-kyung, delivering a variety of performances. In particular, Lee returns to a music program for the first time in about 14 years, showcasing undiminished stage command.
Lee says, "I wanted to show the version of me from my prime," adding, "I lost 10 kg in three weeks" (about 22 pounds), shocking everyone. After a grueling diet, he even pulls off high-difficulty b-boying, turning the studio red-hot. In response, Sung Si-kyung says, "It reminded me how important discipline is," fully relating.
Lee brings Cool’s signature hits live, leading the audience in a full-on sing-along. For the encore, he teams up with Sung Si-kyung and Lee Sung-kyung to deliver a 2026-version Cool stage, adding a fresh twist.
Lee Sung-kyung presents a romantic duet with Sung Si-kyung in the 'Two People' corner. She revisits the song that once went viral after she sang it at a drinking get-together, wowing the crowd with a challenging live that raises the key by a step with each chorus.
Yoon Jong-shin gives flowers to Sung Si-kyung, the new MC of The Seasons, setting a warm tone while joking, "I thought it wasn’t 'Eardrum Boyfriend' but 'Cockle Boyfriend'," and "Isn’t it time you became someone’s actual boyfriend?" He adds, "Sung Si-kyung has everything as a balladeer, but he doesn’t have that lovable loser vibe," drawing laughter.
The episode airs April 3 at 11:10 p.m. KST.