The band gained success with their 1970s releases featuring their boogie rock sound, and nationwide popularity with their 1980 new wave-oriented album Vruće igre.

[3] At the time, Grupa 220 featured two of his former bandmates from Ab Ovo, bass guitarist Nenad Zubak and drummer Ivan "Piko" Stančić.

[3] Prior to Hasanefendić joining the band, Grupa 220 had already gained large success on the Yugoslav rock scene with their 7-inch singles and 1968 debut album Naši dani (Our Days), featuring songs composed by their frontman Drago Mlinarec.

[1] Immediately attracting the attention of the public with their energetic live performances and boogie rock sound, the band gained popularity with their early studio albums, Dođite na show!

[1] After a brief attempt to break into foreign market with an English language album released under the name Steam Roller, the band joined in on the Yugoslav new wave scene with the 1980 album Vruće igre (Hot Games), which launched them to the top of the Yugoslav rock scene.

[2] After Rahimovski's death in 2022, Parni Valjak continued their activity with vocalist Igor Drvenkar, Hasanefendić remaining the sole original member of the group.

[7] Hasanefendić debut as a producer on Parni Valjak's second album Glavom kroz zid (Head Against the Wall).

[10] In 1987, he made a guest appearance on Nebojša Krstić and Srđan Šaper album Poslednja mladost u Jugoslaviji (The Last Youth in Yugoslavia), playing guitar in the song "Razvod 1999."

[11] In 1999, he made a guest appearance on Plava Trava Zaborava live album 16 Nam Je Godina Tek – Koncert (We're Only 16 – Concert), in the cover of the Little Willie John song "Need Your Love So Bad".

[12] In 2007, together with Rahimovski, he made a guest appearance on Vanna album Ledeno doba (Ice Age), in the cover of Parni Valjak song "Stranica dnevnika" ("A Page from a Diary").

[13] Hasanefendić wrote the song "Kaži da l' je ljubav" ("Say if It's Love") for Croatian singer Severina, published on her 1992 self-titled album.

[15] For Serbian singer Tijana Dapčević he wrote the song "Ranjena" ("Wounded"), released on her 2004 album Zemlja mojih snova (Land of My Dreams).