... that in the carol "Vom Himmel hoch, o Engel, kommt", printed in 1622, the angels are requested to come from Heaven with musical instruments, to sing of Jesus and Mary, and for peace?
... that the ice-breaking in the title Islossningen i Uleå älv, a 1889 composition for narrator, men's chorus, and orchestra by Jean Sibelius, was a political statement?
... that Der 100. Psalm, an extended setting of Psalm 100 for choir, orchestra and organ by Max Reger, was premiered simultaneously in Chemnitz and Breslau?
... that a church's 1510 spiral of justice declares: "Justice suffered in great need. Truth is slain dead. Faith has lost the battle"?
... that rehearsing Dvořák's Eighth Symphony, a conductor said: "Gentlemen, in Bohemia the trumpets never call to battle – they always call to the dance!"?
... that in the structure of Bach's St John Passion, the centre of symmetry is "Durch dein Gefängnis ...", expressing: "By your prison ... came our freedom"?