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[3] All the songs from the album became part of the series hit-song compilations of "PolySound" called Klubna ataka.
Signature hits of the album became "Hladni ochi", "Mnogo dalech", "Dajd ot liubov", "Shte bada tam", "Bialo", etc.
The same year they had been invited by the diva of the Bulgarian pop music - Lili Ivanova as an opening act for her concert, which was attended by her close friend Jean-Claude Van Damme.
Daniela and Julia had been touring all over the world[9] and had captured the hearts of millions of fans in Norway, Germany, Denmark, Russia, Cyprus, Israel, Egypt, Czech Republic, England, Ireland, Switzerland, North Macedonia, China, South Korea, United States.
Daniela and Julia were born and raised in a small town situated in the south part of Bulgaria, called Dimitrovgrad[11] They grew up in a musician's family.
They were signed by the Norwegian music agency “Ram” and they started singing on ships of the cruise company Color line, travelling from Norway to Denmark and Germany.
In 1999 Daniela and Julia participated in the International Music Festival for Young Talents “Melfest”, Macedonia with the song When you believe and won 1st prize.
The same year the sisters participated in the "World Championships of Performing Arts" held in Los Angeles, CA and grabbed the 1st prize and the gold with the song “When you believe” in the category for female pop duet.
[18] During the event the sisters were noticed by some local record labels, TV-commercials production companies, model agencies who were interested working with them and who offered them to sign contracts starting from September, 2001.
In 2005 after taking a short break Daniela and Julia released the single “Whatcha waiting for” with the idea to participate in one of the biggest European Song Contests "Eurovision".
But their manager Stefan Shirokov asked them to participate with another song, “Bitter-sweet”, written by Georgi Gogov, violinist and bassist of the German rock band “City”.
The same year they were special guests of the International “Jazz Festival Bansko” where they performed with Ivelin Atanasov – piano, Radoslav Slavchev – bass, Stoyan Koprinkov – drums, Kiril Tashkov – guitar.
[31] In the summer of 2009 Duet Mania had been invited to sing on board of the cruise line ship M/S Julia travelling from Cork, Ireland to Swansea, Wales.
The next single was “Parva sreshta” written and arranged by Aleksander Kostov and lyrics by Valentina Cenova with the special featuring of the rapper Julias Celestin.
[39] With the song "Аko dal si nadejda" starts the music student's book for seventh grade, Anubis Edition.
Three years in row, in 2016, 2017 and 2018 Duet Mania was invited as a special guest of the International Music Festival „Discovery“ held in Varna.
[44] The same year sisters released the single “Tvoia biah” written and arranged by Aleksander Kostov and lyrics by Valentina Cenova.
[49] In December, 2018 the sisters released the new single "Dve v edno", composed and arranged by Rado Minev-RadoRe and lyrics written by Rosen Kukosharov.
Featuring guest artists were Duet Mania's father, the guitarist Tasho Petkov and Julia's daughter, the young female rapper Nessy I.
[50] On October 10, 2019, Duet Mania celebrated their 20-year anniversary with a spectacular two and a half hour live show held at Music Jam.
In June, 2021 Duet Mania had been invited to participate in the 30th Anniversary Gala Concert of the International Music Festival "Discovery", Varna.
"Podarak" quickly captured the hearts of Duet Mania's and Bratia Argirovi's fans and it was the most played song on the radio since its release.
In December 2021, Duet Mania and Bratia Argirovi had been invited to perform at the New Year's Eve Concert of BNT "Novogodishna prikazka".
The same year Duet Mania and Bratia Argirovi were part of the charity concert in support of Ukrainian children "Mir, liubov i saprichastnost" held at Borisova Gradina, Sofia.
[56] In June, 2022 Duet Mania recorded another children song "Kokiche", written by the composer Dono Tzvetkov, arranged by Krasimir Iliev and lyrics by Raina Peneva.
In December, 2022 Duet Mania had been invited to sing at the New Year's Eve Charity Concert of BNT "Novogodishna prikazka".
[62] The sisters were influenced by Mariah Carey, Whitney Houston, Aretha Franklin, Chaka Khan, Celine Dion, Tina Turner, Gladys Knight, Patti LaBelle, Donna Summer, Michael Jackson, Kool & The Gang, Destiny's Child, Christina Aguilera, Beyoncé and Pink.
They have remarkable voices and when Dani plays the saxophone...that makes their performance extremely sexy.” Sam Krumov, CNN World Sport Producer “It's not only the beauty and the talent, that the sisters have… It's the magic that they bring on stage with their presence and energy.” Ivelin Atanasov, musician “Every time they are on stage they sing their hearts out…” Ben Cross, actor In April 2007, Julia and her husband Emil Dimitrov welcomed their first child, Vanesa Dimitrova.
The same year Daniela married the former pianist of the band Latino Partizani [bg], Ivelin Atanasov and the couple moved to New York City.
In 2022 Daniela and Julia were part of the charity concert "Mir, liubov i saprichastnost" in support of the children of Ukraine, Borisova gradina, Sofia.