Possible Clues:

• Carrier of the band's equipment
• New aide or anyone responsible for kit on group tour
• Touring pop group's equipment handler
• Writing circle contacts a director that is helping the group get set up
• Star's assistant using the Stanislavski Method, Greta Garbo impersonator all ends up
• Group's technician calling out the fourth line
• Radio broadcast by English band crew member
• Concert tour aide
• Concert tour worker
• Pole that is restricting a traveller