Clip from the Edith Piaf film biography La Vie en Rose.  Sung by Cassandre Berger (lip-synched by Pauline Burlet, who plays the young Édith in the film).

What is it about patriotic music that stirs the soul?  Is it the “collective memory” of oppression – and the relative costs of triumph in battle?  Is it something specific about the music?  Or both?