Hartera – festival held for the first time in 2005, initiated by KLJB (Club of noise lovers), festival organiser. It is held in the premises of Marganovo, in the former Paper Mill. Apart from the fact that the festival has hosted international performers like Laibach, Roisin Murphy, Klaxons, Royksopp and many others, within the festival various cultural programmes are held like Pecha-Kucha and Interface-new media festival.

Currently Hartera is a respectable festival that lasts for three days and to date it has hosted over 250 exceptional and various musicians from the region and from all over the world who performed in front of about 40,000 guests, and with numerous accompanying events it has gained the title  “different and particular”.