The article text provided does not contain any actual article content — only the page title, website navigation elements ("Music", "Film", "Travel", "Art", "News", "Shop", "Mailing List") and an unrelated "Cover Story" tag for the band Yard Act came through. There is no substantive text about Robert Plant or the band he reportedly wanted to imitate for the piece to be summarised.

I'm unable to provide a factual summary without fabricating details that weren't in the supplied text. If you can share the full article body, I'll summarise it accurately.