Zep pretty much completely ripped off Jeff Beck and Truth with their first album. Zep even did a cover of You Shook Me which Jeff Beck had already done.
https://www.youtube.com/watch?v=ya_Vu5e8yrw
- which Muddy Waters had already done, composer credit attributed to Willie Dixon (1962):
[ame="https://www.youtube.com/watch?v=SgAPHNgHJdw"]https://www.youtube.com/watch?v=SgAPHNgHJdw[/ame]
Don't know what the Beck album lists as credits..
A more complete LZ legacy - composite list:
"
Train Kept A Rollin'" -- Written by Tiny Bradshaw, L. Mann, and H. Kay, first recorded by Bradshaw's Big Band in 1951. Rewritten as a rockabilly tune in 1956 and recorded by the Johnny Burnette Trio (whose guitarist, Paul Burlison, was an influence on Jeff Beck and inspired him to cover the tune with the Yardbirds). The Yardbirds recorded both the "original" tune and a rewritten version called "Stroll On" (the lyrics were modified to avoid copyright hassles) in Michaelangelo Antonioni's film "Blow Up", which features the Beck/Page-era Yardbirds imitating the Who.
"
White Summer" -- Davey Graham's "She Moved Through The Fair."
"
Babe I'm Gonna Leave You" -- Anne Bredon (a/k/a Annie Briggs)
"
You Shook Me" -- Willie Dixon, first recorded by Muddy Waters.
"
I Can't Quit You Baby" -- Willie Dixon.
"
Communication Breakdown" -- Eddie Cochran's "Nervous Breakdown."
"
How Many More Times" -- a mash-up of Howlin Wolf's "How Many More Years" and Albert King's "The Hunter". LZ's version is lyrically related to a cover called "How Many More Times" by Gary Farr and the T-Bones (liner notes by Giorgio Gomelsky, one-time producer for The Yardbirds). Zeppelin's particular arrangement grew from live jams on "Smokestack Lightning" that the Page-era Yardbirds used to do.
"
Dazed And Confused" -- Jake Holmes, written and recorded as "Dazed & Confused." The Yardbirds covered it under the title "I'm Confused," with lyrics altered (originally about an acid trip) for the Zeppelin version.
"
Black Mountain Side" -- The main riff is almost identical to the late Bert Jansch's "Black Water Side," though Jansch cites Annie Briggs as an earlier source.
"
The Lemon Song" -- again a combination of Howlin Wolf's "Killing Floor," spiced with Robert Johnson ("squeeze my lemon" line comes from "Traveling Riverside Blues"). ARC Music filed a suit against Zeppelin in the early 70's, which was settled out of court.
"
Whole Lotta Love" -- Willie Dixon's "You Need Love" (lyrics).
"
Bring It On Home" -- Written by Willie Dixon, though the Sonny Boy Williamson version is the one which this bears a similarity to.
"
Bron-Y-Aur Stomp" -- intro lifted from "The Waggoner's Tale" by Bert Jansch.
"
Gallows Pole" -- traditional, associated with Leadbelly.
"
Hats Off To (Roy) Harper" -- traditional, Bukka White (song entitled "Shake 'Em On Down"), also covered by Joe Lee Williams and Blind Lemon Jefferson.
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When The Levee Breaks" -- Memphis Minnie and Kansas Joe McCoy (see below)
"
Custard Pie" -- Sleepy John Estes did a song entitled "Drop Down Daddy" in 1935, which seems to be the earliest source for this material. Blind Boy Fuller recorded a song entitled "I Want Some Of Your Pie" in 1939. Sonny Terry covered it with the title "Custard Pie Blues." Big Joe Williams also covered it under the title "Drop Down Mama," and his lyrics are pretty much identical to Plant's.
"
In My Time Of Dying" -- Traditional. First recorded by Blind Willie Johnson as "Jesus Make Up My Dying Bed".
"
Nobody's Fault But Mine" -- Blind Willie Johnson (lyrics).
Here's a cool site that sits two songs next to each other for comparison:
Who Sampled- exploring the DNA of Rock & Roll - in this case comparing LZ's "Since I've Been Loving You" with its source, Moby Grape's contemporary song "Never"
"When the Levee Breaks" -- Kansas Joe McCoy and Memphis Minnie (1929):
[ame="https://www.youtube.com/watch?v=swhEa8vuP6U"]https://www.youtube.com/watch?v=swhEa8vuP6U[/ame]