The “ghost lights” are gradually disappearing from London’s theatres as the world learns to live with COVID-19. One by one, household-name shows are returning to one of the most vibrant theatre scenes on earth, and the audiences with them. "As London’s legendary theatre land recovers, Autograph Sound are supplying it with close to 300 channels of Sennheiser’s Digital 6000 wireless systems. Hamilton, Les Misérables, Phantom Of The Opera and Disney’s latest production Frozen are just some of the shows currently relying on Digital 6000 wireless systems.