As new album ‘Saving Grace’ amply demonstrates, the Led Zeppelin isn’t interested in recreating the past, he wants to move forwards. One artists permeates his career, however – the work of female blues pioneer Memphis Minnie. It was Memphis Minnie – together with Kansas Joe McCoy – who first wrote ‘When The Levee Breaks’, a stunning insight into the societal impact of the Great Mississippi Flood of 1927. Later recording another version of the song alongside modern Americana great Alison Krauss, the two brought out new aspects of the material. The song ‘Chevrolet’ explodes Donovan’s 1965 song ‘Hey Gyp (Dig the Slowness)’ – but few realise it was originally adapted from Memphis Minnie and Kansas Joe McCoy’s 1930 blues cut ‘Can I Do It for You?’.