Robbie Williams joins CMAT on stage during day two of Bilbao BBK Live 2026

Robbie Williams made an unexpected appearance during CMAT's set at Bilbao BBK Live 2026, surprising both the singer and the audience. This impromptu collaboration happened after Williams had headlined the main stage earlier that evening. The unexpected stage-dive added an extra buzz to the festival, showcasing the camaraderie and fun spirit that often characterize music festivals. It's a moment that fans will likely remember as one of the highlights of the event, underscoring the festival's reputation for memorable performances.