"I went to Coachella and 99.9 per cent of the acts I saw, I thought, 'Why am I in retirement...?' I was like, 'Get off the stage, let me show you how this is supposed to be done!' There was a lot of shoe-gazing going on and I can't stand that. I feel like if you're paying top dollar to go and see a show, you wanna show." A trip to California's Coachella music festival prompted rocker Shirley Manson to reunite Garbage.