Nope, not Van Morrison or Coltrane. It's hard to say who wrote it because it was plagiarized from other traditional blues songs (not uncommon at all). It was first performed by Big Joe Williams, then popularized by Muddy Waters. And yes, the Doors covered it. Actually, lots of bands covered it in the 60's and 70's, it was a good live tune. Off the top of my head, Ted Nugent, Them, Budgie, and AC/DC also covered it.
Nope, not Van Morrison or Coltrane. It's hard to say who wrote it because it was plagiarized from other traditional blues songs (not uncommon at all). It was first performed by Big Joe Williams, then popularized by Muddy Waters. And yes, the Doors covered it. Actually, lots of bands covered it in the 60's and 70's, it was a good live tune. Off the top of my head, Ted Nugent, Them, Budgie, and AC/DC also covered it.