The United Front Song (Einheitsfrontlied), created by Hanns Eisler and Bertolt Brecht in 1934, is one of the most famous works of German workers' music. Written during their exile after the Nazi rise to power, it combines Brecht's powerful political poetry with Eisler's simple, march-like melody designed for collective singing. The song became an anthem of anti-fascist resistance and remains significant in political music history.