People using face masks attend a music concert in Barcelona, Spain, Saturday, March 27, 2021. Five thousand music lovers are set to attend a rock concert in Barcelona on Saturday after passing a same-day COVID-19 screening to test its effectiveness in preventing outbreaks of the virus at large cultural events. The show by Spanish rock group Love of Lesbian has the special permission of Spanish health authorities. While the rest of the country is limited to gatherings of no more than four people in closed spaces, the concertgoers will be able to mix freely while wearing face masks. (AP Photo/Emilio Morenatti)