Robert Plant has a non-classical tenor voice, range E2 – C#6, 2 octave, 5 and a ½ note range. One of the truly remarkable vocalists of our time, as well as front man to the ultimate rock band of all time, Led Zeppelin, formed in 1968. Plant is assured of immortality. He ranks number 15 on Rolling Stones list of 100 Greatest Singers of All Time. From their entry: “”When I saw Sleepy John Estes and heard that voice — part pain, part otherworldly — I went, ‘I want that voice,’ ” Plant told Rolling Stone in 2006. Somehow, he got that voice, and more: The unearthly howl he unleashed with Led Zeppelin was a bluesman crossed with a Viking deity.”
Read more: http://www.rollingstone.com/music/lists/100-greatest-singers-of-all-time-19691231/robert-plant-20101202#ixzz39BAVva58
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The accolades are too numerous to list here and I have written elsewhere about his vocal qualities and some standout performances, and have more in the pipeline LOL. The first link is the studio version of the song “Babe I’m Gonna Leave You”, from their 1969 album, Led Zeppelin. It’s a killer track – acknowledged by many of his most committed fans as one of his very best. The second link is one of Plant’s early live vocals; a 1969 Danish TV version. It’s not a perfect gig but he traverses a lot of his range with his trademark intense passion-laden wails and screams. The significant notes are high E5 to low C3:
Babe I’m Gonna Leave You studio version 1969
Babe I’m Gonna Leave You Danish TV 1969
Notes on Being 