Hans Lang attended the Vienna Commercial Academy and studied music with Carl Lafite at the New Vienna Conservatory. Lang was a member of the supervisory board of Austro-Mechana and vice president of the Cooperative of Dramatic Authors and Composers. He composed the incidental music for about 25 comedy plays such as Hofrat Geiger, Fiakermilli and Der alte Sünder.
He became best known for his film music for many Heimat films of the 1950s such as Lumpacivagabundus, Der Hofrat Geiger, Der alte Sünder, Hallo Dienstmann, Ober, zahlen! and Die Fiakermilli. In a duet with his partner Maria Andergast, Hans Lang also sang some of his own songs. He wrote the screenplay for the film Haifische der Nachkriegszeit (1925) as well as the operetta Lisa, benimm dich! (world premiere March 21, 1939 Vienna). He collaborated with the lyricist Erich Meder on many of the pieces. Many of their Viennese songs became very popular.
Under the pseudonym Lois Wurzinger[1] Lang also composed folk songs, such as Abend am Almsee (lyrics: Hanna Maria Drack) and Der Gamsbock (lyrics: Karl Edelhofer = Erich Meder).
He rests in an honorary grave in the Neustift cemetery.[2] In 1996, the Hans-Lang-Weg was named after him in Vienna-Donaustadt (22nd district).