Today in “Harlem Shake†legal news: The artists behind two samples on Baauer’s viral hit — Jayson Musson, the Plastic Little rapper who yells “Do the Harlem Shake,†and Hector Delgado, who sings “con los terroristas†— say that their voices were used without permission, and both are in negotiations with his label (Diplo’s Mad Decent) for compensation. But Musson (a.k.a. Hennessy Youngman) is at least amused: He tells the Times that he thanked Baauer “for doing something useful with our annoying music.†Useful, you say.