By the late '90s, box sets increasingly addressed the desires of ardent fans; since the uninitiated were satisfied with smaller compilations, a box set consisting mostly or entirely of unissued material often seemed more appropriate. Even within this paradigm, however, the Grateful Dead are an anomaly -- most of their studio recordings are disdained by fans devoted to privately distributed tapes of their live performances. How, then, to approach a Dead box set? The compilers have scoured the group's extensive vault for a five-CD set which includes only a few tracks that have ever been released in any medium. Adopting a roughly chronological sequencing, they sought out rare songs and, especially, performance highlights spanning the Dead's 30-year career. The compilers are second-generation Deadheads, fans who came to the band in the '70s and '80s, responding to the marathon-length live instrumental improvisations. Time and again, the songs here begin in normal fashion and then take off into uncharted territory; as long as the soloing is interesting, it doesn't matter if lyrics are blown or the singing is off-key. In many cases, the compilers are so enamored of the group's interplay that they include excerpts without the songs that begin or conclude them. The rare songs include selections from the Dead's unreleased 1965 sessions for Autumn Records, outtakes from Workingman's Dead and American Beauty, and rehearsals and live performances of songs intended for a Dead album that was never formally recorded. In short, So Many Roads (1965-1995) was obviously made by Deadheads for Deadheads. The Dead have succeeded over the years by addressing the interests of a cult that welcomes neophytes but also revels in its exclusivity; it's no surprise that their version of a box-set retrospective holds true to that course.