Fairport Convention - Si Tu Dois Partir/Bob Dylan - If You Gotta Go, Go Now

Here's an obscure nugget, Fairport Convention doing a French/Cajun version of Dylan's "If You Gotta Go..." written in 1965, but never officially released until 1991's The Bootleg Series Volumes 1-3. It was covered by Manfred Mann, and appeared as a track on the first rock-and-roll bootleg, Great White Wonder. As to the story behind Si Tu Dois Partir, according to the (Mostly) English Folk Music site:

The story goes that Fairport Convention was playing a gig at the Middle Earth and thought it would be amusing to do Dylan's song in French cajun style, so the band called for volunteers from the audience to help with the translation. Richard Thompson: “About three people turned up, so it was really written by committee, and consequently ended up not very cajun, French or Dylan.”

And here's Mr. D. doing the original...