More than 1000 people gathered for the experiment: Take a same-day, 15-minute antigen test, and then enjoy a concert. In this case, the concert was a free, indoor, rock and roll experiment wherein 500 people got to enjoy the music while the other 500 are serving as a control group. “The crowd reveled in the newfound freedom, dancing closely together and jostling one another for a bit of fun.” – Seattle Times (AP)