> There's some strong similarities there.

In that they both use a descending chromatic line over a minor chord in the harmony, a device that has been used in music for over 300 years.

Their differences are great, notably in the structural importance of the figure (it happens in the middle of an ambient passage in Taurus, but it's the opening, passage of Stairway); in the fact that Stairway uses a melodic line on top of the chords, whereas Taurus doesn't; and that Stairway uses it as a structural block for the whole song, and in Taurus, it's only a moment in the middle of a larger section.

Here is an arrangement by guitarist Davey Graham of She Moves Through The Fair. As someone who heard similarities between Scottish/Irish folk and Indian music, his take on the tune is really quite original.

https://www.youtube.com/watch?v=U0h-XICWlSA

This is a recording of Jimmy Page playing the tune, which sounds so close to Davey Graham's version, it seems impossible that it's not a rip-off. I believe he takes credit for it on recordings.

https://www.youtube.com/watch?v=KqzFzXCfaSc

What's striking is how all the fluidity and expression seems lost in Jimmy Page's version (though still technically accomplished, by most measures).

And Zeppelin have some form.

https://www.rollingstone.com/music/music-news/led-zeppelins-...