The subtitles recount the original lyrics, which are completely different from the Czech ones about quitting time. Mostly, the subtitles are fairly to the point. A slight cloud hangs over the joyful moments. While the students celebrate their pre-exam freedom from school, the political situation is quite grave. The closest comparison for Rebels is another musical film set in the 1960s, Milos Forman's Hair , where the joy of the moment is countered by the harsh reality of the Vietnam War.
Rebels achieves much of that same feeling of quickly dashed elation.