Complex sentence: The rise of the National Socialist movement and their increasing influence on German society is dramatically demonstrated in the beer garden scene: a boy--only his face seen--sings to the seated guests what first seems an innocent lyrical song about the beauties of nature.
Split into simpler sentences: The rise of the National Socialist movement and their increasing influence on German society is dramatically demonstrated in the beer garden scene. A boyonly his face seensings to the seated guests what first seems an innocent lyrical song about the beauties of nature.