I GoodSearched the singers’ names. In 5 pages of hits, not one was in English. The phrase Hungarian Gypsy appeared in several. “Magyar” was also in several, and I think that means the same as Gypsy.
Hungarian people is what comes up with Wikipedia when I typed in Magyar. And the Wikipedia front page has Magyar as one of the languages from which to choose.
This site is a biography. Run through an internet translator, it seems that she was a Gypsy born in eastern Hungary in 1950 and was discovered by a radio station talent contest as a teenager, and has been a rising international Gypsy singing star ever since.
ETA: I’m guessing Bangó is the surname, Margit (=Margaret) the first name.