During the second day of Bilbao BBK Live 2026, Robbie Williams made an unexpected appearance on stage during CMAT's set.Fresh from headlining the main stage earlier that night, Williams surprised both CMAT and the audience by running onto the Repsol stage.The moment began with CMAT joking about the meaning of her name, leading to a singalong of Williams' hit 'Angels'.As she finished, Williams joined her, hugging the singer who later clarified the surprise was unplanned.The event also highlighted CMAT's recent experiences with online abuse following her appearance at Radio 1’s Big Weekend 2026.

She addressed derogatory comments about her body image in a lengthy Instagram post, emphasizing the ongoing nature of such criticism as she gains fame.

Additionally, CMAT's critically acclaimed album 'Euro-Country' received recognition, including an Ivors 2026 Best Album award and a Mercury Prize shortlisting.The festival featured other notable acts like Tomora (Aurora & Tom Rowlands) and concluded with performances by Lily Allen and IDLES.