By fostering bonding (Mehr et al.; Savage et al.), music illustrates marvelously its ability to induce emotional experience. But, music can induce emotion more generally as well. To help explain how music fosters bonding and induces other emotions, I propose that music derives this power from the evolution of what I term “gestural messaging.”

Studies by Gardiner and colleagues connecting musical pitch and arithmetic learning support Rips et al.'s proposal that natural number concepts are constructed on a base of innate abilities. Our evidence suggests that innate ability concerning sequence (“Basic Sequencing Capability” or BSC) is fundamental. Mathematical engagement relating number to BSC does not develop automatically, but, rather, should be encouraged through teaching.

In the target article, Juslin & Västfjäll (J&V) contend that neural mechanisms not unique to music are critical to its capability to convey emotion. The work reviewed here provides a broader context for this proposal. Human abilities to signal emotion through sound could have been essential to human evolution, and may have contributed vital foundations for music. Future learning experiments are needed to further clarify engagement underlying musical and broader emotional signaling.