Foo Fighters welcomed a special guest on stage during their headlining performances at Leeds festival in the U.K. over the weekend. Dave Grohl’s daughter Violet appeared alongside the band for a rendition of “My Hero,” a track she particularly wanted to perform.

“This has been a special trip for me because on this trip we have a new Foo Fighter in the band with us,” Grohl told the audience, adding, “Let me tell you something—she is the best fucking singer I know.” The frontman gave his daughter a lengthy introduction, welcoming her with the accolade, “Ladies and gentlemen, the best singer in the Grohl family: Miss Violet Grohl right now, right here.”