I think that I had ever wrote a similar question, but not in English.
Here in Taiwan, we don't have many information about Rimbaud musical or Rimbaud, so I know it from Matteo(thank you Matteo), he told me about this musical, about Arnaud...
And then, I find a book about Arthur Rimbaud in Chinese(someone translated), not all of his works in the book, but it's enough to me now. I begin to read it, but slowly. Try to find some websites or Rimbaud's poetry on internet. Besides, this forum and website's open help me to know more about Rimbaud.
Although I can't understand at all in the French lyrics, but I still like it very much.
I think that's how I know this musical.
(P.S. I'm happy that we have a English area for talk about Rimbaud)