Gustav Erlanger

The Repertory of the Vienna Court Opera under Gustav Mahler is an account of the ten years during which Gustav Mahler held the office of director and when he directed the productions of more than 100 different operas, of which 33 had not previously been staged at the Hofoper and three were world premieres. Another 55 were presented in either entirely new or substantially revised productions. In all, almost 3,000 performances took place at the Hofoper during Mahler’s tenure, of which Mahler conducted more than 600.

Adapted from the Wikipedia article on Repertory of the Vienna Court Opera under Gustav Mahler.