Music historians have summed up the significance of Bo Diddley with proclamations that he "liberated the blues from the 12-bar form and melded it to an insistent, infectious rhumba beat" and that he "was the progenitor of all that was to come in the evolution of rock and roll." It's tempting to say that each of Bo Diddley's albums were better than the last; but that would be denying the pure, unsurpassed genius of his first, the self-titled 1958 masterpiece Bo Diddley which was also reissued in 1967 on the Checker label under the title Boss Man. The record was rock and roll's Big Bang, dripping with sinew and grease and humor and understated swagger. The simplest ingredients - a guitar, a drum, and some maracas - were packed in a gunny sack and slung over the shoulder of some smiling guy with a slick process and a wild plaid jacket, who took it and ran headfirst into oncoming traffic. Reckless, yet crazy cool. He made it sound easy. Geniuses can do that. Bo Diddley aka Boss Man is not an option, it's mandatory.