Seems like Led Zeppelin has blatantly plagiarized many a song, note for note, rift for rift, word for word. I was aware that many groups, the Stones, the Beatles often covered other groups songs but eventually produced masterpieces of their own. Zeppelin however took plagiarism to the extreme, taking from American blues artist, Joan Baez and others and getting away with it for a long time, including " Stair Way to Heaven" . The arrogant thieving bastards took in hundreds of millions of dollars pretending that the music was of solely of their own making. Zeppelin and Atlantic Records have had numerous legal battles with the original artists. Jimmy Page is an excellent cover guitarist, Plant and excellent cover vocalist. An interest read is found in Bloomberg's May 19-24, 2014. Howard Stern had a show exposing the plagiarism, playing the original followed by the Zeppelin theft. WTF, I still listen to them and enjoy, but much less so as I like originals. This is like finding and enjoying a beautiful lady for years and years, thinking that she was all natural only to find that all this time she has been surgically enhanced masterfully, all over. I hate implants. The song no longer remains the same for ZOSO IMHO.