One musical irony!!!
Martin Luther composed "Mighty Fortress is Our Lord" chorale and Johann Sebastian Bach used it in one of is cantatas. And the idiots of Warner Brothers used this great music in this movie as the musical theme. And guess what? Martin Luther and Johann Sebastian Bach were Germans!!
P.S.: I mean Martin Luther the German monk who challenged Catholic Rome, not Martin Luther King, Jr. of the 1960s Civil Rights movement.