Why are we all affected by music? Developments in cognitive neuroscience and psychology are helping us to explain what happens in our brain when we listen to music. This Geek Speak will be exploring the connections made between hearing and listening. Earworms, Gestalt theory, and the emotional responses we have to music are all part of the equation. We may even answer the old question “if a tree falls in the forest and no one is around, does it make a sound?”