Even by Monaco standards, it wasn’t your ordinary dinner party for 12 on Friday night – though cake and champagne were present in the occasion. To celebrate his 48th birthday, U2 frontman Bono held a small dinner party at Sass’ Café in Monaco. On the guest list: Brad Pitt, Monaco’s Prince Albert II and The Edge. The café’s maitre de tells PEOPLE,

“It was really quite a surprise. It wasn’t organized in advance. We only got called on it that afternoon.”

Despite Brad Pitt’s presence, Angelina Jolie, who had visited Bono in Eze with her children last Sunday, remained at home. The sit-down dinner was arranged by Bono’s wife Ali Hewson, and began with red wine at 10 pm, even before The Edge arrived for the evening. The meal was followed by a champagne toast and strawberry cake lit with candles. It was a party described by a café staffer as “tres speciale” =)