Koncert may refer to:

Parni valjak ("Steamroller") 1975 is a Croatian and former Yugoslav rock band. They were one of the top acts of the former Yugoslav Rock scene, and currently one of the top rock-and-roll bands in Croatia.

Parni valjak was founded in 1975. Unlike many rock bands that would come later, their style was becoming more mainstream, becoming closer to pop, especially compared with the bands like Prljavo kazalište or Film.

As years went by, their refusal to change style proved to be the important factor in the band's longevity. They kept a loyal following in 1980s and in 1990s, refusing to allow elements of folk and turbo folk music to become part of their repertoire. Because of that the band enjoys great respect among many Croatian rock critics, being seen as the embodiment of "true" rock and urban culture and many of their songs are considered evergreens in the former Yugoslavia like "Sve još miriše na nju", "Jesen u meni", "Ugasi me" and "Zastave". Parni valjak kept a relatively small but dedicated following for 30 years, and many people tend to gather at their concerts that feature energetic performances, despite advanced age of the band's members: Aki Rahimovski - vocals, Husein Hasanefendić-Hus - guitars, Marijan Brkić Brk - guitars, Berislav Blažević-Bero - keyboards, Zvonimir Bučević-Buč - bass guitar, Dražen Scholz-Šolc - drums, Tina Rupčić - vocal, Anita Mlinarić - sax.