Watch: Kim Sejeong Charms Yeon Woo Jin With TWICE Cover On Set Of “I Wanna Hear Your Song”

gugudan’s Kim Sejeong was the life of the party in a new behind-the-scenes video for KBS’s “I Wanna Hear Your Song”!

The newly released clip opens with T-ara’s Jiyeon filming a scene in which her character, Ha Eun Joo, storms away after being embarrassed by her enemy Choi Seo Joo (played by Lee Jung Min). Although they display a tense rivalry in the drama, Jiyeon and Lee Jung Min joke around with each other off-camera, showing their friendly chemistry.

For the next scene, the cast gathers to throw a surprise birthday party for Wang Mi Hyang (played by Hwang Hyo Eun). They create a festive atmosphere with cake, colorful leis, and a performance of “Happy Birthday” on classical instruments.

Afterwards, they move to a karaoke room where Kim Sejeong amps up the mood with an adorable cover of TWICE‘s “TT.” Off to the side, Yoo Gun makes everyone laugh by saying, “Aren’t the lyrics a blatant confession of Hong Yi Young’s feelings for Jang Yoon?” and Kim Sejeong adds, “We’re basically revealing our relationship publicly!”

As an idol known for her powerful vocals, Kim Sejeong also expresses her disappointment for not being able to sing fully, saying, “Since I’m still in character, I can’t go all out with my singing. It’s a shame.”

On the other hand, Yeon Woo Jin is tasked with a completely different performance ⁠— tone-deaf singing. Kim Sejeong jokes, “To think I have to cry while listening to that.” Jo Yoo Jung attests to feeling the drowsy effect that Jang Yoon’s singing is meant to have on Hong Yi Young, and Yoo Gun says, “Is Yeon Woo Jin going to release an insomnia treatment album after this?”

Check out the clip below!

“I Wanna Hear Your Song” airs every Monday and Tuesday at 10 p.m. KST.

Catch up on the latest episode below!

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