Born in Vienna, Proch studied jurisprudence and completed his training as a violinist in his native city.
He composed one opera (Ring und Maske), three operettas, incidental music, orchestral works, and chamber music, as well as over 200 lieder, and won further distinction for his translations of Italian operas (e.g., Verdi's Il trovatore, Donizetti's Don Pasquale).
Today, his most famous composition remains the air with variations Deh!
torna mio bene, a virtuosic work for coloratura soprano that has been recorded by most sopranos from Luisa Tetrazzini and Amelita Galli-Curci to Maria Callas.
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