Led Zeppelin VS Spirit. Plagiarism?

F-bombs aside- Ozzy nailed it. It’s a simple minor chord progression. Aside from that little riff, the songs are really not even close. Apples and oranges.

-Tom

it seems that piece is a public domain written in baroque era by harpist O’Carolan

I agree with the above, this is as clear as day, a hefty compensation should be on the cards
for duplication, No one has the right to benefit from other peoples talent and hard work.
Made very little effort to even do something different , not unless its some sort of cover,
If so there should be the word ’ cover by’ at the end of the title.