Mercy’s Anzeiger 16/8/1854 reported that ‘On 18th this month [August], the birthday of His Royal Apostolic Majesty Franz Joseph I, there will be given a festive high Mass in the high church of Teyn [Týn] at 11am.’. No further details were given by this source.

The Czech-language arts periodical Lumír 19/8/1854 reported published a summary of celebratory events given in Prague on the birthday of the Emperor. The source reported that ‘In the church of Týn was a festive religious service at 11am. Present was the Mayor at the head of the city council and an escort of the civil military.’ No further details were given by this source.

On 30/8/1854 Mercy’s Anzeiger published a public notice signed ‘Several friends of good church music’ drawing attention to the performance of a Mass in C by Professor Blatt on this occasion. The notice requested its repetition on the earliest possible date, it having made such a profound impression. The notice related ‘The Mass in C, performed in the Týn high church on the birthday of His Royal Apostolic Majesty, made such a profound impression on us that we would petition the composer Mr Prof. Blatt to repeat this Mass at the earliest opportunity.’