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"A shadow shall fall over the universe... and evil will grow in its path... and death will come from the skies...."

No need to look at the video.. it's from "Heavy Metal" (one of my all-time favorites).
The actual song title is "Heavy Metal (Takin' a Ride)" by Don Felder, not to be confused with "Heavy Metal" by Sammy Hagar (also on the soundtrack).