This article examines the sonic forms of protest that spread throughout Brazil beginning in March 2020 in response to then President Bolsonaro's mishandling of the coronavirus pandemic. I take the panelaços as a site from which to probe the efficacy of sound in sedimenting and congealing incipient political and social subjectivities, especially in contexts of anonymity, isolation, and social distance. Drawing from ethnographic work among panelaço participants, I suggest that these events be understood as the sonic formation of an emergent political public that also intervenes in debates concerning intimacy, stranger-sociality, and the formation of publics more broadly.