Boo Seung-kwan of Seventeen gave advice to Lee Ye-ji, the winner of 'Our Ballad,' on SBS entertainment program 'MumuXChaCha - Ubal Radio.' The first episode, aired on the 6th, was hosted by DJs Jeon Hyun-moo and Cha Tae-hyun, who introduced the stories of the 'Our Ballad' TOP12.

Boo Seung-kwan connected by phone from his tour in Fukuoka, Japan, to cheer for Lee Ye-ji's performance. He praised her vocal skills, saying, "When she first sang 'For You,' the impact was huge. It felt like it fit perfectly, and I cried along when senior Cha Tae-hyun cried. 'Nocturne' was also great. She expressed her own unique color, which inspired me."

Despite her confident appearance on stage, Lee Ye-ji showed nervousness and gave broken reactions, bringing laughter to the scene. Boo Seung-kwan, who is from Jeju, expressed affection, saying, "Coming up from Jeju to pursue a music career reminds me of when I first started music. I haven't contributed anything, but I find it admirable." He comforted the nervous Lee Ye-ji in Jeju dialect, saying, "Think of me as a local older brother," and advised, "You must be busy, so drink plenty of water and take good care of your voice," creating a warm atmosphere.

Regarding why he supports Lee Ye-ji, Boo Seung-kwan said, "Seeing her come up from Jeju and pursue music reminds me of when I started my music career," adding, "I haven't contributed anything, but I find it admirable." Lee Ye-ji shyly greeted him in response, and Boo Seung-kwan also shyly greeted back, causing laughter.

When Boo Seung-kwan asked Lee Ye-ji to sing a song of encouragement, she performed 'To You, Once Again,' which she sang in the third round. Boo Seung-kwan requested a rock ballad, and Lee Ye-ji passionately sang Cho Jang-hyuk's 'Addicted Love.'

The broadcast also featured the segment 'Stars' Phone Song Requests - Hello, It's Me.' Jeon Hyun-moo raised expectations by mentioning stars known as fans of 'Our Ballad.' The connected star was Boo Seung-kwan of Seventeen, who introduced himself as "Boo Seung-kwan of Seventeen, supporting Lee Ye-ji from Jeju." He expressed his fandom, saying, "Lee Ye-ji's 'For You' stage was so impactful at first. It felt like something hit me, and I was inspired."

As a native of Jeju, Boo Seung-kwan showed special affection for Lee Ye-ji. When asked, "Where is the star born in Sindori from?" he emphasized, "I'm from Ildo-dong, the city center of Jeju," adding, "I have pride in being from the city center even within Jeju," which brought laughter. Lee Ye-ji agreed, saying, "That's right. The city center and outskirts are a bit different. Ildo-dong is definitely the city center."

Boo Seung-kwan also asked Lee Ye-ji, "A ballad will be released in January, and I hope you will take on the challenge." Next, Cha Tae-hyun connected with singer Hwang Ga-ram, who topped the music charts with 'I Am a Firefly.' Hwang Ga-ram expressed being a fan of Lee Ji-hoon and said, "I've released about 60 albums. After that, I was loved for 'I Am a Firefly,' but hearing it in Ji-hoon's voice would be healing," making the request.

'Ubal Radio' is a music talk show with a radio concept, hosted by Jeon Hyun-moo and Cha Tae-hyun as DJs, delivering viewers' stories and playing song requests with the voices of the 'Our Ballad' TOP12. The program offers enjoyment to viewers through sincere stories from stars and musical exchanges.