Muhammad Ali could float like a butterfly, sting like a bee and sing like a man who couldn’t read music, keep a beat or stay in tune. In 1963, before becoming the heavyweight champion of the world (and ditching the name Cassius Clay), Ali recorded a spoken-word album, I Am the Greatest!, that features hilariously bad covers of Ben E. King’s “Stand By Me” and Sam Cooke’s “The Gang’s All Here,” not to mention a near constant stream of gloating and potshots at rivals — kind of like a Kanye West album without the Auto-Tune.