Andreas Waldetoft's Overlord expansion score is all about the weight of imperial power. Stargazer opens with this patient, building grandeur that sounds like watching your vassal network spread across the galaxy map. Gather the Fleet shifts into something more militaristic and urgent, brass and percussion stacking into formations.
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Methonos has this brooding undercurrent, strings pulling against each other in ways that feel like political tension set to music. The Overlord Menu Music carries a quiet authority that makes even the title screen feel consequential.
Beyond rounds things out with the vastness Stellaris does best. Five tracks of orchestral space-empire soundtrack that somehow make clicking "subjugate" feel like a dramatic act. Essential listening for anyone who plays Stellaris with headphones on.