This article explores how foreign, recently imported cultural forms can redefine dynamics of legitimation in national cultural fields. Drawing on archival research, the article discusses the early consecration of Anglo-American pop-rock in 1970s Italy and analyzes the articles published by three specialist music magazines. Findings reveal the emergence of a shared pop-rock canon among Italian critics, but also that this "cosmopolitan capital" was mobilized to implement competing editorial projects. Italian critics promoted both different strategies of legitimation vis-à-vis contemporary popular music, and opposite views of cultural globalization as a social process. Theoretically, the article conceptualizes "aesthetic cosmopolitanism" as a symbolic resource which can be realized through competing institutional projects, rather than as a homogeneous cultural disposition.