X:IN released “ZZIRIT (Feat. Luísa Sonza)” and the digital edition of its first studio album Chain Reaction on October 6, 2026.
Key Takeaways
- X:IN released “ZZIRIT (Feat. Luísa Sonza)” and the digital edition of its first studio album, Chain Reaction, on October 6, 2026.
- The physical edition of Chain Reaction arrives October 20, two weeks after the digital drop.
- Chain Reaction holds 11 tracks, opening with “ZZIRIT” and closing with “Girls On Fire (Hardbass Remix).”
- Nova and Luísa Sonza wrote the lyrics for “ZZIRIT”; kruxxbeatz and control x composed it.
- X:IN’s official account confirmed on October 7 that the group landed on the main cover of Spotify’s Girl Krush editorial playlist.
X:IN and Luísa Sonza Release “ZZIRIT”
X:IN released “ZZIRIT (Feat. Luísa Sonza)” together with the digital edition of Chain Reaction on October 6, 2026. The release marks X:IN’s first studio album since its 2023 debut. The current lineup — E.sha, Nizz, Nova, Hannah and Aria — leads the project.
The physical edition of Chain Reaction follows on October 20, two weeks after the digital release. Fans who want the packaged version will wait longer than those streaming the album on release day. No further format details have been confirmed beyond this two-week gap.
The Complete Chain Reaction Tracklist
Chain Reaction runs 11 tracks. “ZZIRIT” opens the album as its lead single with Luísa Sonza. “Neurotox:in (Feat. tiLLie)” serves as the album’s second featured collaboration. “Girls On Fire (Hardbass Remix)” closes the tracklist.
| Position | Track | Note |
|---|---|---|
| 1 | ZZIRIT | Feat. Luísa Sonza |
| 2 | Brain Chemistry | — |
| 3 | Octane | — |
| 4 | Chemical Moment | — |
| 5 | Tempered Steel | — |
| 6 | Zero Kelvin | — |
| 7 | Boom! Crash | — |
| 8 | Neurotox:in | Feat. tiLLie |
| 9 | H2O | — |
| 10 | pH7 | — |
| 11 | Girls On Fire (Hardbass Remix) | Closing track |
Who Wrote “ZZIRIT”?
Nova and Luísa Sonza are credited as lyricists on “ZZIRIT.” The composition came from kruxxbeatz and control x. These credits apply specifically to “ZZIRIT” and not to the rest of Chain Reaction.
The album’s introduction states that X:IN’s members took part in writing lyrics across the group’s first studio album. This is a general statement about the album as a whole. It does not confirm which members wrote which specific tracks beyond the “ZZIRIT” credit already listed above.
Spotify Editorial Support After Release
X:IN’s official account announced on October 7 that the group appeared on the main cover of Spotify’s Girl Krush editorial playlist. This is a placement on a curated editorial list, not a chart position. Spotify editorial playlists function as discovery tools that put a song in front of new listeners rather than measuring sales or streaming totals against other releases.
Why the Collaboration Matters in Brazil
Luísa Sonza is a Portuguese-language artist based in Brazil, giving “ZZIRIT” a direct connection to the Brazilian market. Her participation puts a Portuguese-speaking voice inside a K-pop single released through X:IN’s label system. The digital release landed at 6 a.m. in Brasília on October 6, timing the drop for Sonza’s home audience rather than only for Korean fans.
Release Times Across Latin America, Southeast Asia and North America
| Region | Local Time, October 6 |
|---|---|
| Brazil, Argentina | 6 a.m. |
| Colombia, Peru | 4 a.m. |
| Mexico City | 3 a.m. |
| Jakarta, Bangkok, Hanoi | 4 p.m. |
| Manila, Kuala Lumpur, Singapore | 5 p.m. |
| U.S. East Coast (EDT) | 5 a.m. |
| U.S. West Coast (PDT) | 2 a.m. |
Sources
- VAGALUME · 2026-10-08
- HIT!Magazine · 2026-10-06
- In Magazine · 2026-10-06
- KPOP Signal · 2026-09-19
- 지니 · date unknown
- SeoulSunday.com · 2026-10-02
- Portal K-Pop Brasil · 2026-10-01
- X:IN Official X · 2026-10-07
- Oseyo Korea · 2026-10-08
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