Fredmans epistlar (English: Fredman's Epistles) is a collection of 82 poems set to music by Carl Michael Bellman, a major figure in Swedish 18th century song. Though first published in 1790, it was created over a period of twenty years from 1768 onwards. A companion volume, Fredmans sånger (Fredman's Songs) was published the following year. The Epistles vary widely in style and effect, from Rococo-themed pastorale with a cast of gods and demigods from classical antiquity to laments for the effects of Brännvin-drinking, tavern-scenes, and apparent improvisations.
https://en.wikipedia.org/wiki/Fredmans_epistlar