NME about the likelihood of artists from overseas being able to perform at events this summer, and how COVID could impact on line-ups.With many festivals cautiously going ahead after Prime Minister Boris Johnson’s roadmap to normality stating that full capacity live events and mass gatherings should be able to resume from June 21 in England provided that vaccination targets are met and new COVID variants don’t take hold, much speculation now surrounds what a summer of live music might look like.Many fear that each country’s differing vaccination success and rules around quarantining might make it unviable for artists to tour internationally, while others are hopeful that the coronavirus situation will have vastly improved across the UK, US.