Black Sabbath redux

I listened to this last night for the first time in a while and with fresh ears - it certainly reaffirmed my endorsement. Ozzie's vocals are downright malevolent; every metal singer since has tried to duplicate the intensity. I don't know if the lyrics of Buddy Holly's "Not Fade Away" were copied in N.I.B. on purpose or by accident, but either way it is brilliant. I think that future Valimar reunions might need to revisit this album.