Complex sentence: Ando Drom are a Roma (i.e. "Gypsy") ensemble from Hungary, founded in 1984, who have devoted themselves to the preservation and continued evolution of the traditional music of their culture.
Split into simpler sentences: Ando Drom are a Roma (i.e. "Gypsy") music ensemble from Hungary, founded in 1984. They have devoted themselves to the preservation and continued evolution of the traditional music of their culture.