Judge Pryor is a Renaissance man. When he's not citing song lyrics, he's authoring both the majority opinion and the concurrence, as he did in United States v. Kopp. I'm not sure how the Eleventh Circuit judges decide who authors each opinion, but I don't think I've ever seen a case where a judge wrote two different portions of the same opinion.
Judge Pryor seemingly recognizes the oddity of the situation. His concurrence begins: "Not surprisingly, I concur in full...."