On 12 January 2009, the Bosnian broadcaster Radio and Television of Bosnia and Herzegovina (BHRT) revealed that they had internally selected Regina to compete at the 2009 contest in Moscow, Russia.

Following the introduction of semi-finals for the 2004 contest, Bosnia and Herzegovina has, up to this year, managed to qualify on each occasion the nation has participated and compete in the final.

[9] The seven-member selection committee that determined Regina and the song to be performed at the contest consisted of Dejan Kukrić (Bosnian Head of Delegation at the Eurovision Song Contest), Jasmin Ferović (music editor at BH Radio 1), Adnan Mušanović (music producer of MP BHRT), Goran Kovačić (musician), Miroslav Maraus (composer and arranger), Damir Imamović (musician) and Mahir Sarihodžić (producer).

[10] "Bistra voda" was presented during a television special entitled BH Eurosong Show 2009 on 1 March 2009, which was held at the BHRT Studio A in Sarajevo and hosted by Dejan Kukrić, Maja Čengić and Aida Halilović.

[15] Regina made several appearances across Europe to specifically promote "Bistra voda" as the Bosnian Eurovision entry.

[16][17] Between 10 and 12 April, the band performed as a special guest for 1999 Bosnian Eurovision entrant Dino Merlin's concerts that were held in Gothenburg and Malmö, Sweden as well as in Horsens, Denmark.

[18] The band also took part in promotional activities in Albania, Croatia, Montenegro, Slovenia and Turkey which included several television and radio appearances.

[15][19] According to Eurovision rules, all nations with the exceptions of the host country and the "Big Four" (France, Germany, Spain and the United Kingdom) are required to qualify from one of two semi-finals in order to compete for the final; the top nine songs from each semi-final as determined by televoting progress to the final, and a tenth was determined by back-up juries.

[20][21][22] The running order for the semi-finals was decided through another draw on 16 March 2009 and Bosnia and Herzegovina was set to perform last in position 18, following the entry from Malta.

During the climax of the song, all performers moved to the front of the stage with one of the drummers displaying a red flag in the air using a wind machine.

According to the band, the performers' white costumes emphasized Russian aristocracy, while the predominantly red staging symbolised Russia and the message of "Bistra voda" being a love revolution.

This jury judged each entry based on: vocal capacity; the stage performance; the song's composition and originality; and the overall impression by the act.