When Peter Green left the Bluesbreakers in 1967, he decided to form his own group, naming it Fleetwood Mac after the rhythm section he wanted for the band – Mick Fleetwood (drums) and John McVie (bass).
Fleetwood joined up straight away, and slide guitar player Jeremy Spencer was recruited, but McVie preferred to stay with the Bluesbreakers, where he was earning a regular wage. In the meantime, Green hired Bob Brunning on a temporary basis, hoping that McVie would change his mind.
The Green, Fleetwood, Spencer, Brunning version of the band made its debut on 13 August 1967 at the Windsor Jazz and Blues Festival as ‘Peter Green’s Fleetwood Mac. The National Jazz and Blues Festival was the precursor to the Reading Rock Festival and was the brainchild of Harold Pendleton, the founder of the prestigious Marquee Club in Soho.
The festival, held at the Royal Windsor Racecourse in Windsor, 11th-13th August 1967.