Kako je propao rokenrol (Serbo-Croatian: Kako je propao rokenrol, Како је пропао рокенрол; How Rock 'n' Roll Was Ruined) is a 1989 Serbian anthology comedy film.

It consists of three stories, written and directed by three different screenwriters and directors.

The score was also a joint effort, with lead musicians from the rock bands Idoli, Električni Orgazam, and Disciplina Kičme each composing the music for one segment.

The three independent stories are situated within the context of popular and youth culture in Yugoslavia at the time just before the country broke up, and abound with satirical, farcical, and absurdist humour.

The music for each story segment was written by a different musician, with intro, outro, and intermezzos composed and acted by Dušan Kojić as his stage persona Zeleni zub (Green Tooth).