Kroi Talks New Song ‘SPIN’ & the Creative Journey Intersecting With the Chaos of ‘JoJo’
Kroi wrote “SPIN” as the opening theme for the anime *Steel Ball Run: JoJo’s Bizarre Adventure*, combining an Old West-inspired melody with the band’s chaotic funk sound. The song’s streaming success brought Kroi its first appearance on a US Billboard chart, marking a significant breakthrough for the Japanese band.
The track entered Billboard’s Hot Rock & Alternative Songs chart at No. 44, dated 10 October 2026. Vocalist Leo Uchida described its central idea as continuing through uncertain terrain while holding on to an inner goal, a theme he sees in both the anime and the creative process. The song also draws on film-score influences and Uchida’s early experience playing Ventures covers.
- “SPIN” is Kroi’s opening theme for *Steel Ball Run*.
- It debuted at No. 44 on a US Billboard chart.
- The song joins Old West sounds with Kroi’s funk style.
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Kroi is a Japanese band whose music blends funk with other styles. “Steel Ball Run” is part of the long-running “JoJo’s Bizarre Adventure” series, a manga and anime franchise known for distinctive characters, dramatic action and unusual visual ideas.
The song “SPIN” was written as the anime’s opening theme. Its mix of an Old West-inspired melody and Kroi’s funk sound reflects the series’ setting and unpredictable style. The band’s vocalist, Leo Uchida, has said the song is about moving through uncertainty while keeping sight of a goal, an idea that connects with both making music and the story’s journey.