The theme to play in the intro is an arrangement of the main theme of "The Shining 1980."
Episode is a parallel to the absurdist play "Waiting for Godot."
The theme playing in the intro is actually from Berlioz's Symphonie Fantastique V. Dream of a Witches' Sabbath. You can tell by the bells chiming which do not appear in the theme from The Shining.