In adults, both auditory and motor brain areas are involved in processing musical rhythms (Fujioka et al., 2011, Grahn and Brett, 2007, Patel and Iversen, 2014). Notably, links between auditory and motor systems for timing are already seen in infancy, including spontaneous whole-body movements in response to music (Cirelli et al., 2020, Ilari, 2015, Nakata and Trehub, 2004, Provasi et al., 2014, Zentner and Eerola, 2010). Even though their movements are not yet precisely synchronized to the beat, infants show temporal flexibility such that their movements become faster with faster tempo music (Kragness et al., 2022, Rocha and Mareschal, 2017, Zentner and Eerola, 2010). Other characteristics of rhythms also influence infants’ and children’s movements. For example, changes in rhythmic complexity, such as during syncopation (i.e., accentuation of metrically weak temporal positions), seem to influence children’s urge to move to the music (a psychological state referred to as “groove”; Janata et al., 2012; Kragness, Anderson et al., 2022). More precisely, Cameron et al. (2022) found that children aged 3–6 years preferred medium over low syncopation rhythms for dancing, as do adults. Children only start to show clear synchronized movements to rhythms at around 4–5 years of age and especially so if they received musical training (Drake and Palmer, 2000). Beyond generating movements to the music, infants are also often moved by others, such as when they are bounced or rocked in an interaction with an adult. In this context, infants appear to integrate rhythmic sounds and (other-generated) movements even before they have the motor capacity to precisely synchronize with a beat (Cirelli et al., 2017, Phillips-Silver and Trainor, 2005, Rocha et al., 2021). This research suggests that opportunities for and experiences of auditory-movement synchrony are prevalent in infancy, including both self- and other-generated movements.