"The first one's not necessary": Why Peter Green dismissed his greatest blues-rock Fleetwood Mac song as a mere intro to a greater piece – one that would later intimidate even David Gilmour

Guitarist Peter Green (right) and bassist John McVie, of British rock group Fleetwood Mac, rehearsing at the Royal Albert Hall, London, 22nd April 1969.

The Peter Green story is one of greatness and what could have been, but investigating the musical legacy of one of the finest guitar players and blues songwriters the world has seen unearths some surprises. At the top of the pile is the fact he dismissed one of his greatest achievements… or at least the first half of it.

Fleetwood Mac's Oh Well (Pt. 1) has recently been revisited by Slash with Chris Stapleton – a timely reminder that it houses not just an all-time great riff from Green, but the dynamics of a truly great songwriter. However, just as its name suggests, its blues-rock greatness is only half the story.