If we are talking about legal credit, well then that is another issue. I apologize if I misinterpreted your comment, but it seemed to me you were detracting from their accomplishments because a few songs were not their own. I cannot recall any Beatles recordings that were not written by them being passed off as their own. Led Zeppelin did do that to some extent, but I don’t see how that can affect their legitimacy when they have clearly proven to be forerunners in their own right.
I agree with most of your points Jermo and I was getting at the fact that British Rock invasion was based on black American blues. If we are talking about recording and distribution and selling rights, then we are talking about the law, which is something I am not qualified or interested in talking about. But if we are talking about the principle of taking someone else’s work and using it for your own purposes… well, like I said, that is ingrained in the nature and history of blues.
Does it dampen Zeppelin’s image if they simply take from someone else to further their musical career; yeah, sure it does. But clearly that was not the intent or result of whatever they might have “ripped off”. Led Zeppelin did not just market another person’s song; they made it their own by altering lyrics, rearranging structure and radically changing the sound. A number of recordings stem from traditional blues which may or may not have a single author and was developed over time. Led Zeppelin was the next step in that development. I don’t believe Led Zeppelin ever shied away from acknowledging their roots or sources for their material, but you don’t see them talking about it much because they were not as open to the press and universally appealing as the Beatles.
Don’t get me wrong, I think it is improper (or at the very least shows less creativity) for a band or group to market other people’s music as their own. I think of Glee as the most heinous example. But there is a huge difference in living a musical life on other people’s material and doing what amount to some covers in your early years.
The Beatles and Zep get the credit because they are more popular and popularly recognized than any of the artists they “ripped off”. That is just the way the world works. When somebody says “All along the Watchtower” or “Crossroads” … you don’t think of Bob Dylan and Robert Johnson, you think of Jimi Hendrix and Eric Clapton. It’s not that Hendrix or Clapton or Zeppelin or the Beatles never gave credit because they did (just like everyone else has to) in their liner notes.
You are right, neither was a founder of rock on their own merit. I am not sure anyone can claim that. However, both the Beatles and Led Zeppelin moved rock forward into the form that we see today, which is little changed from the 1960’s.