sentences:  The Big Three evolved from a group called Cass and the Cassanovas, formed in May 1959 by Brian Casser as a trio comprising Casser (rhythm guitar, lead vocals), Adrian Barber (lead guitar, vocals), and Brian J. Hudson (drums) (born Brian James Hudson, 21 April 1938, Cleveland, North Yorkshire).The original line-up played at St George's Hall, Liverpool, on Friday, 15 May 1959.Johnny Hutchinson replaced Hudson in July 1959.