I think my knowledge of music theory is rooted in jazz theory, and a lot of the writers of standards - Rodgers and Hart, and Gershwin.
In Halloween, I viewed the characters as simply normal teenagers. Laurie, Jamie Lee's character, was shy and somewhat repressed. And Michael Myers, the killer, is definitely repressed. They have certain similarities.
Jews have been in Egypt since Biblical times, and Alexandria had once been, at least partially, a Jewish city.