Joker: 'If you really want to make music, sign on … go and live at mum's'

Now McLean is on his Korg Triton, trying to find the source of Wiley's fabled eski sound. “It sounds better on the Triton,” he says as he tries more chords. “It's just a square wave but the second you hear it you think of Wiley.” I ask, stupidly, what …