# Mass of the Fermenting Dregs Iwaou world tour

> Live situation record from CLSTR: https://clstr.news/situations/mass-of-the-fermenting-dregs-iwaou-world-tour
> Updated: 2026-08-18T19:01:40.000Z. Sources: 5. Developments: 2.

Japanese post-hardcore and shoegaze trio Mass of the Fermenting Dregs announced the ‘Iwaou’ world tour to support their first new album in four years. The tour is scheduled to span Asia, Australia, North America, Latin America, and Europe.

Following the digital release of the album in August 2026, high demand for the tour led to changes in the South American leg. Specifically, the band’s debut Brazilian concert in São Paulo was moved from Hangar 110 to the larger Vip Station in Santo Amaro for May 22, 2027, after initial ticket allotments sold out within four days.

## Timeline

### 2026-08-18: Mass of the Fermenting Dregs moves São Paulo show to larger venue

Japanese band Mass of the Fermenting Dregs moved their May 2027 São Paulo debut to Vip Station after tickets sold out in four days.

3 sources. https://clstr.news/cluster/mass-of-the-fermenting-dregs-moves-so-paulo-show-to-larger-venue

### 2026-08-11: Mass of the Fermenting Dregs announces ‘Iwaou’ world tour

Japanese post-hardcore band Mass of the Fermenting Dregs has announced the ‘Iwaou’ world tour to support their new album, with dates scheduled across Asia, Australia, the Americas, and Europe.

2 sources. https://clstr.news/cluster/mass-of-the-fermenting-dregs-announces-iwaou-world-tour

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Cite as: Mass of the Fermenting Dregs Iwaou world tour. CLSTR, https://clstr.news/situations/mass-of-the-fermenting-dregs-iwaou-world-tour