Dr. Laura Cirelli and a group of Toronto-based musicians invited parents and their babies to McMaster University’s “Live Lab.”

The lab is a large stage with the ability to monitor physiological responses like heart rate and stress response. Cirelli’s experiment looks to see how babies respond to music.

Cirelli says, this data will teach us more about how infants and their parents interact with music in a wider social context, and how people interact. Cirelli says, the band reached out to her after deciding they wanted to write an opera for children.