epa09101881 Spanish band Love of Lesbian performs on stage in front of 5,000 people at the Palau Sant Jordi arena in Barcelona, Catalonia, Spain, 27 March 2021. This is the first crowded concert in Spain since the beginning of the COVID-19 coronavirus pandemic a year ago. People had to go through a PCR test and were given FPP2 masks before entering the test concert venue. EPA-EFE/Alejandro Garcia

Members of the audience react as Spanish band Love of Lesbian performs on stage in front of 5,000 people at the Palau Sant Jordi arena in Barcelona, Catalonia, Spain, 27 March 2021. This is the first crowded concert in Spain since the beginning of the COVID-19 coronavirus pandemic a year ago. People had to go through a PCR test and were given FPP2 masks before entering the test concert venue. EPA-EFE/,Image: 601714206, License: Rights-managed, Restrictions: , Model Release: no

Spanish band Love of Lesbian performs on stage in front of 5,000 people at the Palau Sant Jordi arena in Barcelona, Catalonia, Spain, 27 March 2021. This is the first crowded concert in Spain since the beginning of the COVID-19 coronavirus pandemic a year ago. People had to go through a PCR test and were given FPP2 masks before entering the test concert venue. EPA-EFE/,Image: 601714207, License: Rights-managed, Restrictions: , Model Release: no

Spectators attend a rock music concert by Spanish group Love of Lesbian at the Palau Sant Jordi in Barcelona on March 27, 2021. Attendees underwent Covid-19 Rapid Antigen Tests and are required to wear face masks but the social distancing rule will not be complied as part of a study on virus propagation.,Image: 601711554, License: Rights-managed, Restrictions: , Model Release: no