Robbie Williams has just been announced as the third headliner of BitterSweet Festival. The British pop icon joins the line-up of the Poznań festival, which will take place at Cytadela Park in Poznań between August 13th and August 15th. Also revealed today are Jessie J, Leisure, Giant Rooks, and the first Polish artists on the bill – Mrozu and Sobel.

BitterSweet Festival is back with a major announcement. Eight new artists have joined the line-up of the Poznań event, which will take place from August 13 to 15, 2026, at Cytadela Park.

It’s time for another chapter of sweet and bitter stories. BitterSweet Festival has just unveiled five more artists who will perform this August at Cytadela Park in Poznań. Joining the already announced Gorillaz and Twenty One Pilots are Lorde, Tom Odell, Charlotte Cardin, Paul Kalkbrenner, and Meute.