 They increasingly moved away from their R&B roots with appearances in Las Vegas and elsewhere.Elvis Presley went to hear Jackie Wilson and the Dominoes in Las Vegas in 1956 and was so impressed with Wilson's singing that he went back to Sun Studios and cut the Million Dollar Quartet's version of "Don't Be Cruel".Presley introduced the song by saying how Wilson sang it much better and then proceeded to do an impersonation of the much slower Dominoes version, backed by Johnny Cash, Carl Perkins and Jerry Lee Lewis.