The singer took so long getting ready she was more than half an hour late to stage - she had her hair and makeup sorted during her set - and festivalgoers pulled the plug while she continued singing her biggest hit a capella.
And it’s only heightened tensions between Lana and the festival bosses.
Lana was “fuming” that her billing was listed too far down on the poster for the event, prompting organisers to redraw it to give her more prominence. She even considered pulling out altogether.