Please search “Trois hommes en noir” with “en”, which has a meaning in French

https://www.google.com/search?rlz=1C9BKJA_enIT725IT726&hl=it&biw=768&bih=909&ei=9QH-XN-mO4PhkgWv-7P4Aw&q=%E2%80%9Ctrois+hommes+en+noir+sont+arriv%C3%A9s%E2%80%9D&oq=%E2%80%9Ctrois+hommes+en+noir+sont+arriv%C3%A9s%E2%80%9D&gs_l=mobile-gws-wiz-serp.3...27224.30070..30937...0.0..0.665.897.2-1j5-1......0....1.LooZQDli8co

Listen here

https://m.youtube.com/watch?v=l4DwB147080

Pubblicato il 2 giu 2013
Chanson "Trois hommes en noir" tirée de l'album "On n'est pas sorti de l'auberge" disponible en vente à l'Auberge du dragon rouge.

On entend bien le “en”

Or:

Chansons folkloriques à sujet religieux

https://books.google.it/books?id=VZiP7Nj-v4UC&pg=PA321&lpg=PA321&dq=%E2%80%9Ctrois+hommes+en+noir+sont+arriv%C3%A9s%E2%80%9D&source=bl&ots=aALx3Svd1g&sig=ACfU3U2c4vNaxFVtDi88xFaMKY9t4qx2eA&hl=it&sa=X&ved=2ahUKEwiFtLjard7iAhUG-aQKHUZIBQ8Q6AEwAHoECAkQAQ#v=onepage&q=%E2%80%9Ctrois%20hommes%20en%20noir%20sont%20arriv%C3%A9s%E2%80%9D&f=false

and many others