Today’s song contains selected melodies from The Merry Widow, by Franz Lehar (1870-1948). It is number 73 in the countdown of 100 Classical Songs.

Franz Lehár was an Austro-Hungarian composer. He is mainly known for his operettas, of which the most successful and best known is The Merry Widow (Die lustige Witwe).

Lehár was born in the northern part of Komárom, Kingdom of Hungary (now Komárno, Slovakia), the eldest son of Franz Lehár (1838–1898), an Austrian bandmaster in the Infantry Regiment No. 50 of the Austro-Hungarian Army and Christine Neubrandt (1849–1906), a Hungarian woman from a family of German descent. He grew up speaking only Hungarian until the age of 12.
For more on the composer:
https://en.wikipedia.org/wiki/Franz_Leh%C3%A1r

And here is one of the very first songs I made, with a few instrument changes.