“Imperfection is always a virtue in Lorde’s world—whether it’s the “incorrect songwriting” of her fantastically nonlinear banger “Green Light,” her unchosen solitude on “Liability,” or the manic expressive dancing these new songs inspire within her. She has said that her upcoming second album, Melodrama, charts the trajectory of a single house party, which is a little funny in this context—the sear”