The main characteristic of "Tzomet Volkan" that it's very much a film of time and place. The film plot is taking place in Kirayat Haim, a known workers neighborhood in Haifa in one week in October 1973, the week between two main Jewish holidays: Rosh Ha'shana and Yom Kippur. Indeed the film is limited to very short period of time and occurred in one neighborhood in Israel but it's well passing the cultural pattern of those days in Israel and abroad through the screen, it seems like the film creators used the base plot of the film, a story of a formatting rock band followed by "the usual business": betrayals, difficulties, intrigues and loves, just as a "cover story" for passing this time and place cultural pattern.
This era, the begging of the 1970's who followed the 1960's, main characteristic in the world was rebellions and revulsion's (that made their main expression in music witch is the dominate element in the film), was faced a deep conflict with the feelings of nationalism (that sometimes expressed in very conservative ways) that characterized those days in Israel and followed the victory in the six-days war (1967). So it's not surprising that the film makers choose to end the film with scene of the Yom Kippur war break out. The war that breaks out in the 6th of October 1973, is considered as the reason for the ending of this era and the feelings of nationalism who followed it.
"Tzomet Volkan" is very much a film of place too. The film showing the life in Kiryat Haim with all the things that implies from them: the life in the suburban, in the middle of an industrial area full of heavy industry plants, the distance from the big city - Tel Aviv, and cultural pattern that developed beside of that: the port, the central square, local records store and specially the neighborhood's famous football club - Hapoel Haifa.
For those who liked "Tzomet Volkan" I highly recommend the book "Our Holocaust" written by Amir Guftreund that occurred in Kiryat Haim almost in the same period but deals with very different subject - The holocaust.