Zwei Gesänge, op. 1

Zwei Gesänge (Two Songs), Op. 1, are two Lieder for baritone and piano composed by Arnold Schoenberg in fin-de-siècle Vienna, each setting to music a poem by Karl Michael von Levetzow. The songs approached the customary limits of the Lied genre in their length, depth of expression, density of texture, and transcription-like piano writing, foreshadowing Schoenberg's later innovations, notably in his monumental work, Gurre-Lieder. Like many of Schoenberg's early works, they reflect the dual influence of Johannes Brahms and Richard Wagner, two composers often considered opposites in Romantic music.

In 1900, Eduard Gärtner (baritone) and Alexander Zemlinsky (piano) premiered them at Vienna's Bösendorfer-Saal. Audience reception was negative, though Alma Mahler was present and gave a more balanced assessment. In 1903 or 1904, Max Marschalk published them in Berlin under the full title Zwei Gesänge für eine Baritonstimme und Klavier (Two Songs for a baritone voice and piano). Schoenberg dedicated them to Zemlinsky.