Simon Rattle conducts a dreary first installment of Wagner’s “Ring” at the Aix Festival. “Rattle has been taking some flak in the Berlin press — mostly for not being the late Herbert von Karajan, which you might think would be something of a blessing — but he sounded in danger of “Karajanising” his Wagner here, luxuriating in the wondrous sounds he coaxes from the Berliners and almost loving the music to death. There were exceptional moments — the rasp of the lower brass heralding the giants’ entrance suggested terrifying menace — but the overall effect was soporific.”