The live version of 'I Can't Quit You Baby' was a Led Zeppelin outtake that first saw the light of day in 1982. Mastering the tricky track proved to John Frusciante he was ready to make rock music again.
Led Zeppelin didn’t play Woodstock because they didn’t want to be just another act on the bill. That decision aligned with their attitude of doing things on their terms throughout their career.