Limited silver colored vinyl LP pressing. Friday Music is very pleased to announce the vinyl return of Evolution -The Best Of Iron Butterfly. Impeccably mastered from the original Atco tapes by Joe Reagoso (Grateful Dead/Yes/Deep Purple) at Friday Music Studios, this super limited edition 180 Gram LP is also presented in the original album cover layout, featuring the original photos and artwork elements not seen in years. We believe this is the definitive sounding version of this monumental recording and will be one of the more anticipated hard rock audiophile releases of 2026. Iron Butterfly... Evolution... Their greatest hits