Fujii Kaze and Billie Eilish
Fujii Kaze and Billie Eilish organizes the connections between Japanese singer-songwriter Fujii Kaze and American singer-songwriter Billie Eilish. There are three main verifiable points of contact: Fujii Kaze's appearance as a special guest at Billie's Japan tour on August 17, 2025, Fujii Kaze's covers of Billie songs, and affinity in values outside of music.
Overview
On August 17, 2025, at Saitama Super Arena, Fujii Kaze appeared as a special guest at Billie Eilish: HIT ME HARD AND SOFT: THE TOUR Japan Day 2[1]. Fujii Kaze had previously covered Billie songs on his YouTube channel — most notably his major-key reharmonization of "bad guy"[2].
Timeline
- August 11, 2025 — Fujii Kaze's official site announces he will appear as a special guest on Day 2 of Billie Eilish's Japan tour[1]
- August 16, 2025 — Day 1 (YOASOBI as special guest), Saitama Super Arena
- August 17, 2025 — Day 2 (Fujii Kaze as special guest). Official timetable: Fujii Kaze approx. 17:00, Billie Eilish approx. 18:15[1]
- September 5, 2025 — Fujii Kaze's English-language album Prema released[3]
August 17, 2025 Saitama Super Arena Show
Format
On the official record, this was not a collaborative duet but rather Fujii Kaze appearing in his own dedicated slot as the special guest on Day 2 of Billie Eilish's Japan tour[1]. Day 1's special guest was YOASOBI[4].
Timetable
According to the official announcement, the August 17 stage was structured with Fujii Kaze starting around 17:00 and Billie Eilish starting around 18:15[1].
Note: distinction from official collaboration
Some unofficial setlist data and audience reports note that Fujii Kaze performed a snippet of Billie's "bitches broken hearts" during the August 17 show. This is not an official release or video, and should be treated as "noted on unofficial setlists" only.
Fujii Kaze's covers of Billie songs
Fujii Kaze has uploaded "bad guy Billie Eilish in a major key" on YouTube — a piano-led, major-key reharmonization of Billie's signature track[2]. It is recognized as a defining piece of his early cover-video output.
Billie Eilish's HIT ME HARD AND SOFT: THE TOUR is run in partnership with the environmental NPO REVERB, and has consistently featured sustainability initiatives such as greenhouse-gas reduction, single-use plastic reduction, and promotion of plant-based food[5].
This direction is compatible with the non-harm and altruistic core message officially expressed in Fujii Kaze's albums HELP EVER HURT NEVER and LOVE ALL SERVE ALL. The pairing has therefore been received as more than an arbitrary booking — it reflects a closeness in values.
Musical comparison
The two artists' musical signatures are markedly different. Billie's work is minimal and shadowy, defined by whispered close-mic vocals and meticulous bedroom-style production with Finneas. Fujii Kaze moves across piano, R&B, soul, jazz, gospel and J-pop, with strong improvisational and physical presence in live performance.
That said, several common threads can be identified:
| Aspect | Billie Eilish | Fujii Kaze | Connection |
|---|---|---|---|
| Early career launch | Worldwide breakthrough as a teen | Posted YouTube covers from his teens | Internet/bedroom-born talent |
| Vocals | Close-mic, whispered, shadowy | Soft yet soulful | Aesthetic of restrained vocal delivery |
| Piano/keys | Central in ballads | Primary instrument | Singer-songwriter at the keyboard |
| Ethics/thought | Vegan, climate activism | Vegetarian, spiritual / non-violent messaging | Shared off-stage values |
| Global reach | Center of global pop | Real internationalization from mid-2020s | Connected via the Japan show |
Significance for Fujii Kaze
2025 was a year in which Fujii Kaze sharply accelerated his global activity — releasing the English-language album Prema, touring in Europe and the U.S., and playing major overseas festivals[3][4]. Within that arc, appearing as a special guest at the Japan show of a central figure of English-language pop is symbolic of his transition from "popular Japanese artist" to "artist introduced within global pop discourse".
What cannot currently be confirmed
As of April 2026, no official collaborative track, co-written song, or formal duet recording between Fujii Kaze and Billie Eilish has been released.
| Type | Status |
|---|---|
| Same-show appearance | Confirmed (August 17, 2025, Saitama Super Arena)[1] |
| Fujii Kaze covering Billie | Confirmed (e.g. major-key "bad guy")[2] |
| Billie-song snippet during show | Mentioned on unofficial setlists/audience reports |
| Official collab track | Not confirmed |
| Joint stage duet | Not confirmed in official sources |
Cautions
The following cannot currently be asserted as fact:
- "Fujii Kaze and Billie Eilish have officially collaborated" — same-show special-guest appearance is verified, but no official audio/video co-performance or duet exists
- "They sang together onstage" — official sources describe a separate special-guest slot, not a joint stage
- "Snippets of each other's songs in setlists are official statements" — these are entries in unofficial setlist data, not official releases
Notes
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 "Fujii Kaze to Appear as Special Guest on Day 2 of Billie Eilish". Fujii Kaze OFFICIAL SITE. 2025-08-11. Retrieved 2026-04-30.
- ↑ 2.0 2.1 2.2 "bad guy Billie Eilish in a major key". Fujii Kaze (YouTube). Retrieved 2026-04-30.
- ↑ 3.0 3.1 "Prema". Fujii Kaze OFFICIAL SITE. Retrieved 2026-04-30.
- ↑ 4.0 4.1 "Fujii Kaze and YOASOBI to appear as special guests at Billie Eilish's Japan tour". Mikiki. Retrieved 2026-04-30.
- ↑ "Billie Eilish: Hit Me Hard and Soft World Tour". REVERB. Retrieved 2026-04-30.