(Photo credit: Mara Bratoš / HNK Zagreb) According to a diary entry by Richard Wagner’s wife Cosima, in January 1883 – three weeks before his death – the composer thought he still owed his “Tannhäuser” to the world. To his mind, this “große romantische Oper,” first performed in Dresden in 1845, had never acquired a definitive form. The Croatian National {…}