In December 1973, “PGP RTB” label released “Kiselina” (Acid), the debut Pop Mašina album. It was recorded in September 1973, at “Studio X PGP-RTB” in Belgrade, Serbia, and was produced by Robert Nemeček, Zoran Božinović and Mihajlo Popović.

Personnel:

• Robert Nemeček – vocals, bass guitar, acoustic guitar
• Zoran Božinović – vocals, guitar
• Mihajlo Popović – drums, congas
• Sloba Marković- organ
• Miša Aleksić- bass guitar
• Raša Đelmaš– drums
• Branimir Malkoč, Drago Mlinarec, Ljuba Ninkovič, Vojislav Đukić – backing vocals
• DAG(Dragan Popović, Grujica Milanović, Aleksandar Milanović) – backing vocals
• Slobodan Petrović – engineer
• Jugoslav Vlahović- design

Track listing:

1. Na drumu za haos – Zoran Božinović
2. Pesma srećne noći – Robert Nemeček
3. Mir – Zoran Božinović
4. Kiselina – Zoran Božinović
5. Tražim put – Zoran Božinović
6. Povratak zvezdama – Zoran Božinović
7. Svemirska priča – Robert Nemeček
8. Slika iz prošlih dana – Robert Nemeček