The soundtrack for Agents of the Four Seasons Dance of Spring represents a distinctive confluence of Kensuke Ushio’s musical signatures: delicate piano work, layered electronic textures, Japanese melodic motifs, and an undercurrent of the supernatural that never overshadows the story’s emotional resonance. In a wide-ranging conversation, the composer opened up about his inductive creative process, the challenges of composing the story’s pivotal vocal pieces, and the collaborative alchemy that shaped the final score.
How Kensuke Ushio Joined the Project
Ushio’s path to the series began with a familiar intermediary. Music producer Shinji Yamauchi, a long-time acquaintance, had approached him multiple times over the years with offers to collaborate, but schedules never aligned. When Yamauchi reached out again for Agents of the Four Seasons, the timing finally worked. The other critical factor was director Ken Yamamoto. Ushio had previously been invited to participate in another project Yamamoto was connected to, and the prospect of finally working with people he had long admired made the decision straightforward. The composer noted that being approached by individuals he genuinely wanted to collaborate with lowered the barrier to entry significantly.
Returning to a Familiar Genre Through a New Lens
The source material, a fantasy novel published under Dengeki Bunko, represents a genre Ushio had not tackled before in his professional work. Yet the territory was not entirely foreign. As a teenager in the 1990s, he consumed fantasy stories as an avid fan, and Agents of the Four Seasons contained elements that overlapped with those formative influences. The project gave him a rare opportunity to express those influences honestly, without overthinking the conceptual framework. He cited the series Boogiepop Phantom as a close point of reference from his past work—a title that had shaped his sensibilities during adolescence. The team behind the adaptation, which included sound director Eriko Kimura—a collaborator since Ping Pong—further reinforced his confidence. Working with a familiar team meant he could focus on composition without the friction of uncertainty.
An Inductive Approach to World-Building
Ushio’s typical workflow involves concept work before production begins, but this project followed a more inductive path. Rather than establishing a rigid concept and then deducing each track, he started by creating an initial image album—a batch of exploratory pieces that allowed the world of the series to take shape organically. The concept emerged after the music, not before. He examined character designs and let his imagination expand, incorporating Japanese-style melodic motifs and instruments but then shifting them with electronica, techno arrangements, and sci-fi textures to avoid a purely traditional sound.
A key early track was “Hinagiku – theme from ‘Agents of the Four Seasons: Dance of Spring,’” which came together quickly and intuitively while he was simply playing the piano. The melody felt natural, as if guided by the power of the work itself. Tracks like “Hinagiku and Sakura” and “montage” were also part of that early exploratory phase, blending romantic melodies with glitchy and electronica elements to test how far the combination could be pushed.
The Challenge of the “Songs of the Four Seasons”
Among the most demanding aspects of the project were the vocal pieces known as the “Songs of the Four Seasons.” Ushio does not typically compose vocal tracks, and these presented a significant learning curve. The lyrics were drawn directly from the source material, so his starting point was a careful study of the text. For the “Winter Song,” which includes a line about killing autumn and dying in spring, he chose a lower register to suit the male voice. The “Spring Song” came relatively easily, but the other three were considerably more difficult. He recalled shouting into his pillow and pacing around the studio muttering, “I can’t do this anymore,” while working on them.
Director Yamamoto gave him considerable freedom throughout the process. When Ushio presented the first version of the “Spring Song,” Yamamoto’s immediate reaction in the meeting was simply, “OK.” When the composer asked whether he should add more instruments, the director replied that it was not necessary. The arrangements remained intentionally sparse—just vocals and a Japanese-style rhythm—allowing the lyrics and melody to carry the emotional weight.
What Is the Role of the Chorus in the Soundtrack?
The chorus in tracks such as “Hinagiku and Sakura” was designed to evoke something solemn and resonant without leaning into conventional Western or Japanese traditions. Ushio deliberately avoided a traditional church choir sound, which would have introduced a Christian image of divinity, and also steered clear of a fully traditional Japanese approach, which would have clashed with the world of the original work. He settled on a Celtic-influenced sound that struck the right balance. The chorus, along with drums and bells, helps express a sense of the transcendent and supernatural that underpins the romantic melodies at the heart of the score.
Why Timing and Pauses Matter in the Final Episode
Ushio emphasized that the music continues to evolve once it enters the finished episode. The collaboration with sound director Eriko Kimura and music selector Maiko Goda was instrumental in this transformation. A notable example occurs in the climax of Episode 1, during the scene where Nazuna sheds tears after Hinagiku’s dance. The track “Hinagiku – theme from ‘Agents of the Four Seasons: Dance of Spring’” includes a pause partway through—an idea that emerged from discussions with director Yamamoto. Goda then linked the timing of the music with the cuts, editing it slightly to align with Nazuna and Sakura’s lines. The music stops briefly, then resumes with a precision that Ushio described as truly exceptional. He noted that only someone with Goda’s skill could bring out that level of impact, and he recommended listeners pay close attention to her work when watching the episode.
A Soundtrack Built on Trust and Instinct
Ushio’s approach to Agents of the Four Seasons Dance of Spring was marked by trust—in his collaborators, in his instincts, and in the material itself. Rather than over-engineering a conceptual framework, he allowed the music to emerge from a combination of teenage influences, technical experimentation, and the intuitive responses that came from engaging with the characters and story. The result is a soundtrack that feels both deeply personal and carefully constructed, a balance that Ushio attributes as much to the director, sound director, and music selector as to his own work. The soundtrack is available on all major music streaming platforms for listeners to explore.
