There is much to be said about Hungarian folk music, but I will be brief in describing it.
Basically Hungarian folk music is divided into two major groups:
1. The so called old-style
folk music that has an ascending melody line with characteristic pentatonic scale sometimes with a quint change. These characteristics closely tie it to eastern, Eurasian folk traditions such as Central-Asian and East Asian musical cultures.
2. The so called new-style
folk music that is supposed to have appeared in the 18th century with western influence has an ascending domed shaped melody line. This style of music is more related to Western folk music culture.
Since technology provides us easy access to multimedia sources, I will link a very interesting authentic Hungarian folk music and tradition database of the user Sinodius. (Although it provides manly ethnographic video documentations and not limited to the Hungarian ethnic group!).http://www.youtube.com/user/sonidus