(Photo: Agnese Zeltiņa | Files.fm.) I’m not generally given to elaborating on opera plots; preferring for the audience to discover them for themselves, even where the outline of the tale is fairly well known. Alas, I feel somewhat compelled to at least superficially proffer some brief abridgement of “Salome,” if only to illustrate and accentuate the bizarre, outlandish and frequently {…}