This research note investigates the revival of Ukrainian folk music in the (re)invented military funeral rituals during the ongoing war on Ukraine. Since the 2022 full-scale invasion, elements of folk music – such as historical Cossack songs, the Carpathian trembita, and lullabies – have re-emerged in urban civic mourning, symbolizing national grief, resistance, and identity. Drawing on concepts of revival, postrevival, and (re)invention (Livingston, Bithell & Hill, Hobsbawm, Prickett), the article examines how these musical forms are recontextualized in response to trauma and loss. Through three specific case studies, the article explores how Ukrainian folk music has been adapted to contemporary urban ritual settings and examines its role in shaping symbolic expressions of memory, resilience, and cultural continuity in wartime Ukraine. The study contributes to the broader discourse on the role of music in ritual transformation in the context of war and conflict.