" Vltava, also known by its English title The Moldau, and the German Die Moldau, was composed between 20 November and 8 December 1874 and was premiered on 4 April 1875 under Adolf Čech. It is about 13 minutes long, and is in the key of E minor.

In this piece, Smetana uses tone painting to evoke the sounds of one of Bohemia's great rivers. In his own words:

The composition describes the course of the Vltava, starting from the two small springs, the Cold and Warm Vltava, to the unification of both streams into a single current, the course of the Vltava through woods and meadows, through landscapes where a farmer's wedding is celebrated, the round dance of the mermaids in the night's moonshine: on the nearby rocks loom proud castles, palaces and ruins aloft. The Vltava swirls into the St John's Rapids; then it widens and flows toward Prague, past the Vyšehrad, and then majestically vanishes into the distance, ending at the Labe (or Elbe, in German). "

~ https://en.wikipedia.org/wiki/Má_vlast#Vltava

https://en.wikipedia.org/wiki/Bedřich_Smetana