Sky Wikluh , popular Serbian composer and rap musician , wrote a song for her , named " Moja noć " , with production done by Gru . This song was one of the reserves for the Beovizija 2009 , if someone of twenty contestants decided not to take part in . Kostić also sang as backing vocal for Regina 's song " Bistra voda " , which represented Bosnia and Herzegovina in the Eurovision Song Contest 2009 . On 1 July 2009 Kostić performed " Bože pravde " , the anthem of Serbia , alongside two more singers at the opening ceremony of 2009 Summer Universiade , which was held in Belgrade . She also performed " Bože pravde " at the closing ceremony of the 2009 Summer Universiade , and at the public reception of Serbian champions from the 2009 World Aquatics Championships . In August 2009 , Kostić performed as a revival artist at the music festival in Ohrid , performing " Moja noć " and her new single " Daj mi sve " , which features Sky Wikluh as a supporting artist
Beovizija 2009
Beovizija 2009
Mika K.