Franz Schreker
Krenek's music encompassed a variety of styles and reflects many of the principal musical influences of the 20th century. His early work is in a late-Romantic idiom, showing the influence of his teacher Franz Schreker, but around 1920 he turned to atonality, under the influence of Ernst Kurth's textbook, "Grundlagen des linearen Kontrapunkts", and the tenets of Busoni, Schnabel, Erdmann, and Scherchen, amongst others.