Starting from the metaphor of "playing chamber music at a rock festival" used by Peter L. Berger in 1992 to describe the impact of The Social Construction of Reality on US sociology, this article works out how the book's somewhat puzzling legacy as a bestseller and a classic with remarkably rare direct follow-ups in the US discourse can indeed be conceived. I argue that one needs to take into account the theoretical-historical context in which Berger and Luckmann developed their ideas, including the specific forms of knowledge production in US sociology at the time, the institutional background of the book's emergence at the New School for Social Research and the author's biographical trajectories. On this basis, on can explain why Berger and Luckmann's reformulation of the sociology of knowledge both perfectly met the 1960s Zeitgeist (which made it a bestseller) and at the same time remained theoretically marginal.