I meant to day highlight the guitar part in "Needle of Death".
Back in the day, I worked out the guitar part in the key of G and then I used to capo it up to suit my voice.
I often wondered back then why I couldn't get some of those lovely "added notes" that Bert found.
Recently, I saw some tab for it, and it uses chords from the key of A.
Intially, I thought this was a mistake but when I played through it, all those lovely "missing" notes became available.
Another example of Bert's genius.