Instruct: Classify the given Amazon review as either positive or negative.
Query: Classic British Blues, Peter Green is outstanding

Granted, John Mayall's vocals are just this side of terrible; it wasn't until his Silvertone releases that Mayall's voice became anywhere near convincing. But that's not what you should be buying this for. You should be buying this to listen to the excellent group playing, and of course Peter Green's guitar. Peter is a more subtle and more soulful player than Eric Clapton, and his instrumental here, "The Supernatural," is the blueprint from which Carlos Santana has built nearly every solo he's ever played. Even though this CD does contain one of the worst versions of "Dust My Broom" (here called "Dust My Blues") ever recorded, this CD is well worth having for fans of blues guitar, period. Peter Green is the man who B.B. King said gave him the chills, and he never said that about Eric Clapton - or any other guitarist for that matter.