Mendelssohn's Symphony No. 5, commonly known as the 'Reformation' Symphony, was written in 1830 to commemorate the 300th anniversary of the Augsberg confession – a seminal event in the Protestant Reformation. Allusions to the symphony's title and inspiration can be heard throughout the music itself; the Dresden Amen is cited by the strings in the first movement whilst the finale is based on Martin Luther's well-known chorale Ein feste Burg ist unser Gott ('A Mighty Fortress is Our God').