Gru is a Serbian rock band formed in 1990 in Belgrade. The band's sound is a mix of hard rock, heavy metal, and traditional Serbian folk music. Gru has released 12 studio albums, 3 live albums, and 4 compilation albums. The band has toured extensively throughout Europe and has performed at major festivals such as Exit Festival and Rock Werchter. Gru is one of the most popular and successful rock bands in Serbia.