The album that this song comes from is called "Mazel Tov" and is filled with references to Yiddish imaginary and klezmer music.
St. Pauli is a football team from the German town of Hamburg, known for the unmistakable political orientation of its fan club.
It seems that among the "certified" fans of St. Pauli there is also an administrator of this site... [INSCO]

As a "certified fan" of St. Pauli I must say that this song, in the German version, has essentially become the official anthem of the team; or it is perceived as such. [RV]

Chanson italienne – Sotto terra – Giacomo Lariccia – 2014