It’s pretty awesome when an act can maintain a theme for a ton of albums. Running Wild, Swashbuckle, and Alestorm have pirate metal locked up. Powerwolf is really diving headlong into… werewolf metal? But they sing about vampires too, so that’s a thing. And Sabaton’s managed to hold steady and draw from historical battles as musical inspiration for 6 full albums. Their album, Carolus Rex, is available in Swedish and English, and draws from 17th century Swedish battles and monarchy.

Here’s a fan-made video, pretty heady stuff.