Although music is universal, there is a great deal of cultural variability in music structures. Nevertheless, some aspects of music processing generalize across cultures, whereas others rely heavily on the listening environment. Here, we discuss the development of musical knowledge, focusing on four themes: (a) capabilities that are present early in development; (b) culture-general and culture-specific aspects of pitch and rhythm processing; (c) age-related changes in pitch perception; and (d) developmental changes in how listeners perceive emotion in music.Keywords: Music development; Musical enculturation; Music cognition; Pitch perception; Music and emotion Although music is evident across cultures, its structure differs in terms of the pitch (i.e., scales, chords) and temporal (i.e., meters, rhythms) patterns formed by sequences of tones and tone combinations. Through simple exposure, listeners eventually become knowledgeable about the music of their native culture. Does this mean that infants are born as musical blank slates? If not, what aspects of music are universal and reflective of human processing predispositions? How does experience with a particular genre shape our understanding and appreciation of music? And how do musical cues come to be associated with particular emotions? We explore these questions by reviewing research on culture-general and culture-specific influences on pitch and rhythm perception, and on developmental changes in music cognition and emotional responding to music. Our focus throughout is on basic, behavioral research conducted with typically developing populations.Correspondence should be sent to Glenn Schellenberg,