 He then recording a song entitled "Biščanka" and premiered it a popular music festival in Bihać, Bosnia and Herzegovina.Kalač has recorded duets with Serbian singer Stoja (a 2003 remake of his 2000 song "Tika tak") and Bosnian singer Šemsa Suljaković ("Lažu te"; first featured on her 2000 album "Ne vjerujem nikom više", later re-released on his 2003 album "Voda, vazduh i sloboda").Both duets were major successes.