In the article, I discuss how cultural memory related to the Polish People's Republic period can be used to negotiate meanings within family groups. Using the example of the Soldiers’ Song Festival in Kołobrzeg, I examine rhetorical strategies of oblivion regarding this media event. The material for analysis was interviews done by students collecting family memories concerning the festival. The sphere of oblivion has a dual character: individual oblivion (older generations) and generational-social oblivion of the young.