Austrian conductor, pianist, teacher, and composer.

Prohaska studied piano with Eugen d'Albert and music theory with Franz Krenn and Eusebius Mandyczewski, and with encouragement from Brahms. He taught at the Strassburg Conservatory 1894/95 and worked as an assistant at Bayreuth, conducted the Warsaw Philharmonic Orchestra 1901-05, then taught piano, score-reading, and accompaniment from 1908 to 1919 at the Vienna Akademie für Musik und darstellende Kunst (= Conservatory), where he was instrumental in 1924 in transforming the Akademie into a Hochschule.

No correspondence between Prohaska and Schenker is known to have existed. (Correspondence between his son, Felix, and Oswald Jonas from 1963-65 survives as OJ 36/204.)

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