This from Neil Young, talking about his song "Ambulance Blues" from his album "On the Beach":
"I always feel bad I stole that melody from Bert Jansch. ... You ever heard that song "The Needle of Death"? I loved that melody. I didn't realize "Ambulance Blues" starts exactly the same. I knew that it sounded like something that he did, but when I went back and heard that record again I realized that I copped his thing ... I felt really bad about that. Because here is a guy who ... I'll never play guitar as good as this guy. Never. He's like Jimi Hendrix or something on the acoustic guitar."
The above is from the book "Shakey" by James McDonough.