Possible Clues:

• Patriotic song from Russo-American
• Extract from 'Batman' theme song
• National or church song
• In Pakistan, the meaning of a song
• Can the musicians keep in tune?
• The hill-dweller over the Border may be heard in church
• The insect on the border in the church, by the sound of it
• Song of praise or loyalty
• "The Star-Spangled Banner," e.g
• Key work?