Frederik Iversen was a Danish traditional music

Danish traditional music

thumb|350px|right|Rebild Spillemandslaug, a [[guild]] of traditional musicians founded by [[Evald Thomsen]].Danish traditional music is the music genre that has its roots in pre-modern Denmark. In this period it was common for towns to have one or more town musicians who played at dances,...

ian and composer. He became famous through the dances he held in from 1912 to 1939 at his restaurant Trædballehus west of Vejle

Vejle

Vejle is a town in Denmark, in the southeast of the Jutland Peninsula at the head of Vejle Fjord, where the Vejle and Grejs Rivers and their valleys converge. It is the site of the councils of Vejle Municipality and the Region of Southern Denmark...

, in Western Jutland

Jutland

Jutland , historically also called Cimbria, is the name of the peninsula that juts out in Northern Europe toward the rest of Scandinavia, forming the mainland part of Denmark. It has the North Sea to its west, Kattegat and Skagerrak to its north, the Baltic Sea to its east, and the Danish–German...

. He played the clarinet

Clarinet

The clarinet is a musical instrument of woodwind type. The name derives from adding the suffix -et to the Italian word clarino , as the first clarinets had a strident tone similar to that of a trumpet. The instrument has an approximately cylindrical bore, and uses a single reed...

 and fiddle

Fiddle

The term fiddle may refer to any bowed string musical instrument, most often the violin. It is also a colloquial term for the instrument used by players in all genres, including classical music...

 and composed many of the tunes that are now the stock of Danish traditional music, such as his famous version of "trædballehus polka" (which probably adapted from other local fiddlers). At Trædballehus he performed with his musical partner the fiddler Jens Andersen, and the duo achieved national fame, with the Danish National Radio even transmitting live from some of their dances.