There’s a case to be made for John Cale being the most daring ex-member of the Velvet Underground. Lou Reed redefined the transgressive possibilities of literate three-chord rock’n’roll. Cale, arguably, has travelled even further.

A Welsh miner’s son who won a scholarship to Goldsmiths, Cale engaged with the early flowerings of Fluxus before mixing with John Cage and La Monte Young’s Theatre of Eternal Music in New York’s downtown avant-garde scene.