A collection of songs known as Piae Cantiones (‘Pious Songs’) was published in Sweden. It was a collection of 74 Latin texts, all popular sacred and a few secular songs sung at various schools and cathedrals in Finland and Sweden. Subsequent editions of the collection appeared with additional songs until the 19th century, and although publication stopped in the 1800s, many songs of Piae Cantiones remain in use in Finland and Swedish churches.
The English version of Piae Cantiones was made known by the prominent nineteenth century church musician Thomas Helmore and the hymnwriter John Mason Neale. Neale translated many of the texts into English, and Helmore edited the tunes. Many of these are now known as carols for Advent and Christmas: ‘Good King Wenceslas’, and ‘Good Christian Men Rejoice’ (In dulci jubilo) are two examples.