Whilst not a soul singer by any means, one of my firm faves has to be Billy Fury. As well as his faithful emulation of American RnR and Rockabilly (most apparent on his "Sound Of Fury" LP), he had a voice never to be matched by anyone else. He also did cover a few soul/doo-wop-type originals, including "Letter Full Of Tears" by Don Covay, "All I Wanna Do Is Cry" by Billy Bland, "A Thousand Stars" by The Rivileers, etc. He was also consistently changing his style to fit in with what was in vogue at the time; in fact by 1962 he had given up his rockin' style and began to sing beat and ballads, which would have blended in well at the time.