His close lifelong friendship with renowned basketball player Mirza Delibašić led to the duo becoming inextricably linked to the bohemian lifestyle of Sarajevo.

During his career, he earned nicknames including "Pimpek", "Davor", "Dačo" or simply "Pjevač" (literally the Singer) due to his unique voice.

Some of the most popular songs commonly associated with Indexi were actually issued as Popović's solo works, such as "I pad je let" ("The Fall Is Flying Too") or "U tebi se žena rađa" ("You're Becoming a Woman") from his debut LP Svaka je ljubav ista (osim one prave) (Every Love Is the Same (Except The True One)) from 1976, which was oddly the first studio album with entirely new songs that was recorded by Indexi as a group, having previously issuing singles and compilations rather than studio albums.

It was however released as his solo effort because the band was working on their progressive masterpiece "Modra Rijeka" ("Dark-Blue River") at that time.

[1] As a sign of the highest appreciation of the city for his artistic work, he was interred in the Alley of Greats at Bare Cemetery, a prestigious place reserved for exceptional Sarajevo citizens.