About the Tour

MASS OF THE FERMENTING DREGS will take their new album ‘Iwaou’ (‘Let’s Celebrate’) around the world on their largest international tour to date, with 47 shows planned across 46 cities and 26 countries.

MASS OF THE FERMENTING DREGS “Iwaou” THE TOUR begins at FEVER in Tokyo on September 6th, 2026 before moving through Hong Kong, Malaysia, Taiwan, Thailand, South Korea, and the Philippines later in the year. The Kobe alternative rock trio will then head to Australia in February 2027, followed by an extensive run of North American dates in April and May, including shows in Vancouver, Seattle, Los Angeles, Chicago, Toronto, Boston, and New York.

The tour continues into Latin America with dates in Mexico, Chile, and Brazil before MASS OF THE FERMENTING DREGS return to Europe in September 2027. The 18-date European leg includes concerts in Amsterdam, Berlin, Warsaw, Prague, Paris, and Brussels, as well as four UK shows in London, Bristol, Manchester, and Glasgow. The world tour will conclude back in Japan with a finale at Tokyo’s LIQUIDROOM on November 7th, 2027.

The tour supports ‘Iwaou’ (‘Let’s Celebrate’), MASS OF THE FERMENTING DREGS’ sixth album and their first in four years. Released digitally on August 14th, 2026, the six-track record includes ‘Simmer Summer’, ‘Let It Go’, ‘Hers’, ‘Dareka ga kizu wo ou sono shunkan wo’, ‘Iwaou’, and ‘Ghost’.