This is a rare version of "Hej, Slováci!" ("Hey, Slovaks!"), a Slovak Nationalist song from ca. 1840s that served as the de facto anthem of Jozef Tiso's Slovak State (also known as the "First Slovak Republic"). The state didn't have an official anthem, but used the party anthem of Andrej Hlinka's Slovak People's Party.
The song continues to be used by Slovak Nationalist parties - such as Marian Kotleba's People's Party Our Slovakia.
The flag is a fictional First Slovak Republic one I designed inspired by the insignia of the Hlinka Guard, the paramilitary force of the Slovak State.
![](https://i.ytimg.com/vi/zzTCJADzNBA/maxresdefault.jpg)