In the great Woodstock tradition, this gift from a flower (or two) to a generation (or two) is also a corporate boondoggle--a classy way for Warner Bros. artist Simon to rerecord, rerelease, and resell the catalogue CBS is sitting on. Paul has forgotten Art enough to relax as a singer, which means that much of the S&G material has improved since 1971. But live doubles are live doubles, nostalgia is nostalgia, wimps are wimps, and who needs any of 'em? C+