Angelo Neumann

Josef Angelo Neumann (18 August 1838 – 20 December 1910) was a German operatic baritone and theatre director. First a baritone at major opera houses in Europe, including the Vienna Imperial Opera, he was the managing director of the Leipzig Opera and the Estates Theatre in Prague. He is known as an early promoter of the stage works by Richard Wagner, namely the ''Ring'' cycle, which he presented with the sets and costumes of the world premiere at the Bayreuth Festival, first in Leipzig and then on a European tour. Provided by Wikipedia