A rhythm section so good, they named the band after them. Mick and John formed the Mac during the British blues explosion of the late '60s, put out some albums of blues covers with Peter Green, then relocated to the States where, alongside new personnel - Lindsey Buckingham, Stevie Nicks and Christine Perfect - they blasted off to massive fame and fortune.

But behind the massive pop rock tunes that made Rumours one of the most popular albums of all time was the blues bedrock of its instinctive and empathic rhythmic partnership. Solid, at least, inspired occasionally, and always, always perfect for the song, whether it was a big, emotive number like 'Gold Dust Woman' or a frankly brilliant but insane jam like 'Tusk'.