In addition to being a massive game, The Witcher 3 was also a massive localisation project. CD Projekt Red mixed up seven different languages into a particlularly touching bard scene, in which you're introduced to Priscilla.
Having played through the scene and heard the song in English, I actually like the multi-language version better. The lyrics aren't bad, just not incredible, and there's that whole effect of not knowing the words making it seem better. If I ever learn the translation of Macarena, it'll ruin it for me.
Youtube user Kalmaved was kind enough to provide timecodes are all the languages.
English — 1:03 German — 1:17 Japanese — 1:35 Polish — 1:54 French — 2:20 Portuguese — 2:46 Russian — 3:17
This video contains all the languages that are fully voiced in the game, while eight other languages are included as subtitles.