Leo Leux, born Gottlieb Wilhelm Leuchs on March 7, 1893, in Munich, Germany, was a renowned German composer known for his work in film scores. He began his musical career as a bandmaster and later composed music for the Theater am Kurfürstendamm, as well as several revues that gained him public recognition.

Leux's initial foray into the film industry was as an actor in supporting roles, appearing in films such as "Der Diener des Herrn Baron" (1919) and "Die lila Hölle" (1920). However, he soon transitioned to composing for films, with his first engagement in this capacity being in 1930 for "Susanne macht Ordnung." He went on to compose for numerous films throughout the 1930s and 1940s, including notable works like "Truxa" (1937) and "Venus on Trial" (1941).

During the Nazi era, Leux worked on both entertainment films and ideologically oriented projects. Despite the challenges of the time, he continued his career after World War II, contributing to films such as "Ghost in the Castle" (1947) and "Torreani" (1951) until his death on September 8, 1951, in Berlin, Germany. His contributions to film music left a lasting impact on the industry, showcasing his ability to adapt and thrive in a rapidly changing world.