The Australian outfit played an instrumental set in Dessau, Germany, for fans who were unable to change travel plans in time. But they won't appear as planned at Graspop in Belgium today or at the Southside Festival in Germany tomorrow.

Northlane said last night: "Marcus had been feeling increasingly ill over the last few days, causing us to seek medical assistance. It was revealed he had an issue that needed to be operated on immediately due to a high risk of the problem getting worse.