On KBS2's 'Immortal Songs,' Kim Yeon-ja raised the hands of both Lee Chan-won and Son Tae-jin simultaneously, achieving a grand harmony in the year-end trot kingdom. The 737th episode, aired on December 27, was the second part of the '2025 Year-End Special - Trot Kingdom, Game of Thrones.' In this broadcast, 'Traditional Trot Prince' Lee Chan-won and 'New Trot Prince' Son Tae-jin fiercely competed for the throne, putting their teams' honor on the line. They delivered thrilling performances, marking the climax of the 2025 year-end. This broadcast recorded a nationwide viewership rating of 5.9%, ranking first in its time slot. (Based on Nielsen Korea)

In the latter half of the third round, 'Performance Battle - Turn the Stage Upside Down!' which continued from Part 1, the talents of trot prodigies stood out. Kim Da-hyun chose Min Hae-kyung's 'Longed-for Face' and delivered a perfect performance with dancers. Despite her young age, she captivated the panel of judges with her seasoned skills. Hwang Min-ho energized the stage with Kim Ji-ae's 'Annoying Person,' moving dynamically across the stage. Especially, his janggu (Korean drum) performance raised the excitement of the audience.

The performance battle between Lee Chan-won and Son Tae-jin was also impressive. Son Tae-jin sang Han Young-ae's 'Is Anyone There?' while performing a sensual dance, and Lee Chan-won selected Geum Jan-di's 'Brother' and showcased a bold rhythm dance. After a fierce contest, the third round victory went to the 'Traditional Trot Team.' Lee Chan-won expressed his joy, saying, "I can't believe I won by showing my performance and dance."

The fourth round proceeded as the 'Hidden Card Battle.' Son Bin-ah of the Traditional Trot Team displayed the charm of his mid-low voice with Bae Ho's 'Who is Crying,' while Chun-gil of the New Trot Team reinterpreted Jang Yoon-jung's 'Slow Train to Mokpo' in his own style. Lee Chan-won sang Choi Heon's 'Cherry' with his friend Hwang Yoon-sung, showcasing fantastic chemistry, and Son Tae-jin delivered a high-class crossover harmony with Liberante on Patti Kim's 'You Are My Friend.'

With the fourth round result favoring the New Trot Team, the score was tied at 2-2. The much-anticipated fifth round was presented as the 'Princess's Choice - Who is the Owner of the Throne?' segment. In this segment, the final winner was decided not by the panel of judges but by the 'Princess's' preference. The princess greeted with unprecedented tension, and the two princes and their supporters fiercely competed to win her heart with charming performances.

Kim Jun-su and Kim Da-hyun of the New Trot Team showcased a traditional Korean music color with Noh Sa-yeon's 'The Winding Road,' and Cheon Rok-dam delivered a unique vocal performance with Cho Yong-pil's 'That Winter's Teahouse.' In response, Hwang Min-ho and Kim Soo-chan of the Traditional Trot Team heated up the atmosphere with Han Hye-jin's 'You Are My Man.' In the final showdown, Son Tae-jin performed Seol Woon-do's 'Last Love' and his hit song 'I Will Call You,' while Lee Chan-won sang his new song 'Mother's Spring Day' and Kim Yeon-ja's 'Within 10 Minutes' consecutively, stirring the princess's heart.

Finally, the identity of the princess was revealed as trot legend Kim Yeon-ja. She appeared, declaring, "I am the princess," and elevated the excitement to its peak with performances of 'Mercury Lamp' and her new song 'Ssuktteokkung.' Kim Yeon-ja declared a 'draw' as the final decision. She explained, "Everyone worked so hard that I wanted to give the throne to both of them." In response, Lee Chan-won and Son Tae-jin embraced each other and performed a blues dance.

Son Tae-jin expressed his gratitude, saying, "I am thankful just to be here with the title of prince," and added, "Whether traditional or new trot, I am here thanks to the fans who love the music." Lee Chan-won said, "Isn't this like becoming joint lords? I think it is our responsibility to inherit the strengths of traditional trot while developing new trot, so I will work even harder."

The '2025 Year-End Special - Trot Kingdom, Game of Thrones' concluded successfully with a splendid finale featuring the princess Kim Yeon-ja and the two princes Lee Chan-won and Son Tae-jin singing 'Amor Fati' together. This second part was a special to mark the end of 2025, featuring intense and stylish stages. The depth of traditional trot and the bold performances of new trot clashed, proving the infinite spectrum of trot. The competition between Lee Chan-won and Son Tae-jin provided viewers with unforgettable thrills and enjoyment. 'Immortal Songs' airs every week at 6:05 PM.