Duet Mania is a Bulgarian pop duet formed in Sofia, Bulgaria, in 1999 and consisting of two sisters: Daniela Petkova and Julia Dimitrova.
Duet Mania members began their musical endeavors in their pre-teens in their home town Dimitrovgrad, Bulgaria, as members of a children choir called "Happy Childhood" and as lead vocalists of a band called "Sparkles". After years of performing underground they were signed to "PolySound" as Duet Mania.
In 1999 they released their first best-selling album called Ne e istina, which contained the number one singles "Svetat e za dvama", "Pesenta na shturcite", "Ne e istina", "Ne iskam, ne moga". The album went on to become a critical and commercial success, with estimated sales of more than 50 thousand. They are the most successful Bulgarian female duet in the history of pop music, topping the charts all over the country from 1999 to present All the songs from the album became part of the series hit-song compilations of "PolySound" called Klubna ataka.
In the year of 2000 Duet Mania was pronounced "Best Bulgarian Pop Duet", by "Art Rock Center".