The silly red hat: it’s back. At first, when I see Elvis Costello wearing that questionable fashion choice once again atop his head while performing (an abridged) “All This Useless Beauty” at the start of tonight’s episode of Spectacle: Elvis Costello With… (airing Wednesdays at 9pm EST/PST on the Sundance Channel), I conclude that he must dust the thing off each time a devotee of opera appears on the show. Tonight’s guest, after all, is American soprano Renée Fleming. Alas, my conclusion is premature: halfway through the episode, Costello introduces, as a surprise guest, Rufus Wainwright, who appears wearing the same outfit from his previous episode. This episode, then, was taped on the same day, perhaps the only day that hat made it out from some whimsical closet and into public.