Liz Phair: ‘It would have been terrible if I’d died after my last album – I will not make that mistake again’

With her seminal 1993 debut ‘Exile in Guyville’, the singer-songwriter dismantled the rock patriarchy and provided a generational touchstone for the young and the reckless. As she releases her first album in 11 years, she talks to Adam White about backlash, Britney, and her plans to leave music behind her