[3] During the mid-1980s, Janjetov was a vocalist for the Yugoslav art rock band Heroina, with which he recorded one album.
Janjetov started to draw at very early age with strong support from his parents.
Young Janjetov was influenced by the works of Walt Disney, and had already made his first short comic at age seven.
After finishing high school, he continued his education at the Academy of Arts in Novi Sad, where he graduated.
[5] Janjetov designed the album artwork for Heroina along with artwork for a number of other Yugoslav acts, including Oktobar 1864, Viktorija, Angel's Breath, but also for international world music acts, like Zuco 103, Konono Nº1, Bebel Gilberto, Celso Fonseca, Tartit, Taraf de Haïdouks, Mahala Raï Banda, Kasai Allstars, Kočani Orkestar and other acts.