Which culture aspect does this type of song portray? A German Polka Dance.

I'm assuming tradition, and social values.

German Polka DAnce, which is a type of dance that emerged in the Bohémia region during the first half of the 19th century, is an example of European folk dance. It is characterized by fast tempo, in a 2/4 measure, which requires fast movements and some agility.

It takes place for reasons of tradition (it is not an innovative art), and can be performed by any man or woman (it is not limited to professional dancers / dancers although there may be professional folk dance groups).