Austrian pianist, teacher, and editor, pupil of Czerny and Simon Sechter. Door made international concert tours, and was professor of the advanced piano class at the Vienna Conservatory 1869-1901. He was a member of the Brahms Circle.

Door was one of the editorial team that Universal Edition assembled at its inception in 1901, among which Schenker was numbered; Door edited works by Beethoven. He was joint founder with Julius Epstein in 1879 of the Wiener Tonkünstler-Verein.

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