Los Angeles event producer AMFAMFAMF, which stands for “All My Friends” (uh, times three) and local producer Studio 4/4 are the impresarios behind Black Book in the Park, a formerly annual house music event at the Mural Amphitheater that’s back this summer after a three-year hiatus. (Possibly because they played house music outside and it canceled itself out?) Labelmates from Black Book Records will be performing, including British DJ (and Black Book owner) Chris Lake, L.A.-based electronic dance act Noizu, and Australian electro-swing duo Yolanda Be Cool.