Leo Susana - Redemption Song (Bob Marley cover) 88/365

I sometimes play "Redemption Song" live. My cover owes a lot to Joe Strummer's take on the song which is the reason I decided to finally learn it. It was like, Oh yeah, I can change keys and do it a bit differently. I also love Stevie Wonder's cover.
But I'm never sure what key to play it in. If I play it in G or Gb if my guitar is tuned down (like here) then I can't really hit the high notes.
Anyway, it's just a great song!