personnel paul mccartney lead vocal , piano , bass , handclaps john lennon backing vocal , rhythm guitar , handclaps george harrison backing vocal , lead guitar , handclaps ringo starr drums , drums ( with brushes ) , handclaps ronnie scott tenor saxophone bill povey tenor saxophone harry klein baritone saxophone bill jackman baritone saxophone george martin producer ken scott engineer geoff emerick engineer cover versions fats domino covered the song in 1968 .