Early British rock & roll yielded a handful of artists who displayed extraordinary staying power over the decades -- Cliff Richard, Billy Fury, Adam Faith, and Mike Berry come to mind. Most of these achieved their career extensions through a more honest, less contrived extension of the pop/rock with which they'd started out. Duffy Power was the exception, a popster turned legitimate British bluesman (with the imprimatur of Alexis Korner, the father of British blues, no less) who was still highly regarded in the latter field well past the 20th century.
Born Raymond Howard in 1...