Participation in this project requires headphones. Please connect your headphones now and follow the steps below. After you complete the instructions on this page, please be sure to keep your headphones on for the remainder of your participation.
Find a quiet place with no background noise
Put on good quality headphones (Note: Do not listen over speakers)
Listen to the entire audio file below using headphones and count how many tones you hear
How many tones did you hear?