Someone to Watch Over Me
"Someone to Watch Over Me" was originally the title of a song from the musical Oh, Kay (1926) with music composed by George Gershwin and lyrics written by his brother Ira Gershwin. The song later became a "jazz standard" and one of the most well-known songs of the "Great American Songbook".
Despite the reference in the title, the Gershwin song was not used. Instead, the episode featured the musical theme that Bear McCreary wrote for his adaptation of the Bob Dylan song "All Along the Watchtower".