Formed in Dallas, Texas, USA, in 1968, the American Blues evolved out of local club attraction the Warlocks when Rocky Hill (guitar), Dusty Hill (b. Joe Hill, 19 May 1949, Dallas, Texas, USA; bass), Doug Davis (organ) and Frank Beard (b. 11 June 1949, Frankston, Texas, USA; drums) took their new name upon adopting a more ‘progressive’ sound…