Plastic Mermaids: ‘The concept of what a band should be is a bit stifling’

Attempts to describe Plastic Mermaids sound will land you in a quagmire of words like ‘psychedelic’ and ‘eccentric’ – and their new album is as indefinable as ever. The Isle of Wight band speak to Annabel Nugent about writing a break-up album and their unconventional goals for the future, which includes one-person show