Culture Minister Caroline Dinenage has praised the mini-festival held in Liverpool on Sunday as part of the Government's Events Research Programme.
About 5,000 people attended the outdoor gig in Sefton Park. They were not distanced or wearing masks but were required to present a negative test result for Covid-19 prior to entry.
Their health will be monitored in the coming days, with hopes that a low level of transmission might facilitate the return of large scale events in the summer.
Dinenage said the event was "a milestone" and "a momentous occaison to celebrate".
"There is nothing quite like the collective experience of hearing your favourite act live in the atmosphere of a festival and I hope everyone [had] a fantastic day."