This was the theme used by the late, great Long John Nebel, a NYC midnight-to-dawn radio talk show host, who was the progenitor of Art Bell, Coast to Coast AM, and others.
Krell music from Forbidden Planet:
https://www.youtube.com/watch?v=WR-MkDKWWW0&list=PLRLCwrdOigtm7KXEfoL7zJCE3EyJ0_ijV