Mirjana KostiÃÂ (; born 6 August 1983), professionally known as Mika K., is a Serbian singer and musician who came to media attention as a contestant on the talent show Operacija trijumf.
KostiÃÂ graduated from the musical high school in Subotica and won a full scholarship for Berklee College of Music in Boston twice. She has two older sisters, one of whom is an opera singer in London.
Kostiàadmires Beyoncé Knowles, Alicia Keys, Anastacia, Lauryn Hill, Toà ¡e Proeski, and Dino Dvornik. She is fluent in Serbian, English, and Hungarian.
Before the Operacija trijumf, Kostiàhad a few television appearances on the B92. In 2008, she achieved regional fame as a student of Operacija trijumf, the Balkan version of Endemol's Fame Academy. At the opening gala event, she performed "Molitva", the Eurovision Song Contest 2007 winning song of Marija à  erifoviÃÂ, with à  erifoviàherself and another student, Milica Radoà ¡eviÃÂ. After a series of additional competitions, broadcast on the Operacija trijumf special show, the audience decided to give Kostiàand Macedonian Kristijan Jovanov a second chance.
KostiÃÂ and Jovanov entered the academy after the fifth gala event. KostiÃÂ's first performance as a student was at the sixth gala, where she sang En Vogue's hit single "Free Your Mind" with Sonja BakiÃÂ. KostiÃÂ and Jovanov, as the students least known to the audience, left the academy after the seventh gala, where KostiÃÂ performed "Kofer ljubavi" by Macedonian singer Kaliopi with Kaliopi herself. After her performance with KostiÃÂ on the Operacija trijumf, Kaliopi said KostiÃÂ was her favourite on the show and that she is preparing a song for KostiÃÂ because she is impressed by her voice.
When she was nominated, KostiÃÂ cried and said that she did not want to leave the academy and she and Jovanov are not responsible for the things that had happened earlier at the academy. She later said that "this is injustice", and that she feels sorry because the audience could not meet her better.
After the show, KostiÃÂ took on the professional nickname "Mika K.".
Serbian composer and rap musician Sky Wikluh wrote a song for her, "Moja noÃÂ", with production done by Gru. This song was one of the reserves for the Beovizija 2009, in the event that one of the twenty contestants decided not to take part. Kostiàalso sang backing vocals for Regina's song "Bistra voda", which represented Bosnia and Herzegovina in the Eurovision Song Contest 2009. On 1 July 2009, Kostiàperformed "Boà ¾e pravde", the anthem of Serbia, alongside two other singers at the opening ceremony of 2009 Summer Universiade in Belgrade. She also performed "Boà ¾e pravde" at the closing ceremony of the 2009 Summer Universiade and the public reception of Serbian champions from the 2009 World Aquatics Championships. In August 2009, Kostiàperformed as a revival artist at the music festival in Ohrid, performing "Moja noÃÂ" and her new single "Daj mi sve," which features Sky Wikluh as a supporting artist.
KostiÃÂ is currently working on her debut album, which will be produced by Sky Wikluh and include collaborations with several musicians worldwide, such as Greek pop star Anna Vissi. She announced that she will record songs in Serbian, English, and Hungarian.