Place it at the start of an invasion scene to set the stakes, then follow it with an Evil Laugh after the alien is revealed. For a slower build, open with Hello Darkness My Old Friend before it, then let the invasion begin.
About this sound
This 16-second clip plays a sweeping passage from Jeff Wayne's musical theme for The War of the Worlds, with dramatic orchestral swells and a driving rhythm that builds tension. It feels ominous and cinematic, like something huge is approaching, and it works best as a moment of looming threat. The music comes from Jeff Wayne's adaptation of H. G. Wells's story.