Bassist Anthony Jackson stands as one of the masters of the instrument. The ubiquitous sideman's exhaustive discography spans many genres' of music. An academician,his tenacious research into the origins of the bass led to the invention of the six-string contrabass,a couple of decades before five-string basses became popular. He also has the distinction of co-writing with Gamble & Huff, the O'Jays' million-selling single "For the Love of Money," from their platinum album Ship Ahoy. Jackson's dynamic, flanged, plucked bassline on the single set a precedent among four-string axe players.