Jay Z. is stunned with Amy Winehouses mean temper at the Glastonbury Festival over the weekend, after launching a scathing attack on his very good friend Kayne West. The rehab singer hit the headlines the other day for attacking a audience member in the crowd at the English music festival on Saturday, but headliner Jay-Z was more put out by the singer’s comments about friend West minutes later. Jay-Z, who was watching her show from the side of Glastonbury’s Pyramid Stage, admits he was a little upset when Winehouse turned on his "brother" during a rant in which she attempted to defend festival organizers for hiring Jay-Z as Glastonbury’s first rap headliner. She told the audience: "Imagine if it was a c**t like Kanye West! `C**ts like Kanye’ - should be his next album title!" Jay-Z tells MTV.com, "She said something about Kanye late on (in her set) but I didn’t hear it and I don’t agree with it. He’s my brother and the biggest artist on Roc-a-fella (records) right now."I guess I should hook them up because he’s a great guy too. I don’t know what the problem is - I don’t know where that (comment) came from."