Fieldvole, the lyrics you quote were taken from the recording by the soul singer Howard Tate who had a hit with it in the middle'60's and that is where Janis got it from. Tate left the music biz and became addicted to drugs then was born again and became a preacher in LA, he has recently been "rediscovered" and has recorded a great CD. the profits from which he has pledged to use to fund a drug rehabilitation centre.He was recently here in England and I can tell you, he is one blindingly good singer.