Lullabies have existed since ancient times, and are sung across all most all cultures to soothe babies and lull them to sleep. As screen media use pervades contemporary familial lives, it is perhaps inevitable that lullabies have been adopted and adapted as repertoire. This recording of lullabies in audiovisual modes has transformed the ways in which these songs are learned, transmitted, experienced and used within young children's lives. As part of a larger study investigating music and screen media in the lives of young children, this paper reports on evolving lullaby practices in the lives of Australian children. Using an ethnographic methodology, content and production of, and responses to, lullabies presented via YouTube, Apps and television have been analysed. Findings indicated that lullabies presented via YouTube clips and Apps tend to be economically produced, and demonstrate a lack of understanding of young children's social and/or developmental needs. Televised lullabies tend to function as signals for settling, rather than for lulling babies and young children to sleep, and their use plays an increasingly significant role in families' everyday routines.