Which Peter Green-era Fleetwood Mac track best defines the band's blues soul?

Peter Green Blues Era (1967-1970) poll options

Peter Green Blues Era (1967-1970)

Fleetwood Mac: Formation to Peter Green Departure Era (1967-1970)

Fleetwood Mac

• Albatross's haunting calm
• Oh Well's raw swagger
• Black Magic Woman's groove
• The Green Manalishi's darkness