In psychology special attention has been focused in early interactions and it has been suggested that they show “antecedents of temporal arts” (Dissanayake, 2000). A bridge has been drawn between the initial moments of development and enormously complex cultural activities such as music and dance. This bridge connects both events without going trough the ontogenetic development at all. Even so, it´s a theoretically fine connection, probably because it links events that share the same nature: the lack of referenciality. We can say it is an epistemological bridge. But from an ontogenetic perspective this bridge has no support: the gap between one end and the other skips all infancy and more. On the contrary, we may suppose there is a continnum of “non referential acts” in which infants acquire sensitivity and expertise about the antecedent of temporal arts. In the first part, the asymmetry of early interactions and the repetition of motifs (one of the resources by which adults generate their Infant Directed Performances) are highlighted. In the second part, one of the “non referential acts” that we called “forms of vitality play” (in reference to Stern (2010) expression) is presented and it shows how in this kind of interactions asymmetry is reduced and the motifs became co-constructed. In both cases -early interactions and forms of vitality play- priority was given to the analysis of movement based on dance categories.