(Photo:Birgit Gufler) In 1718, the Venetian composer Antonio Caldara and the librettist Apostolo Zeno premiered their opera “Ifigenia in Aulide” for the imperial court in Vienna to celebrate Emperor Karl VI of Austria’s name day. This summer, over three hundred years since its last staging, the Innsbruck Early Music Festival brought together a stellar cast under the musical direction of {…}