Herbie Flowers (born Brian Keith Flowers, 19 May 1938, in Isleworth, Middlesex) is an English musician specialising in bass guitar, double-bass and tuba. He is noted as a member of Blue Mink, T. Rex and Sky and as one of Britain's best-known session bass-players, having contributed to recordings by Elton John (Tumbleweed Connection etc.), David Bowie (Space Oddity/Diamond Dogs), Lou Reed (Transformer including the prominent bass line of "Walk on the Wild Side"), Roy Harper, David Essex, Allan Clarke, Al Kooper, Harry Nilsson (including bass on "Jump into the Fire"), Cat Stevens, Serge Gainsbourg, Paul McCartney and George Harrison: he also played bass on Jeff Wayne's Musical Version of The War of the Worlds. By the end of the 1970s Flowers had played bass on an estimated 500 hit recordings.