Live Albums:
I've not been a lover of live albums as to me they're kinda like a cheap option (saves on studio time). Minutes of audience clapping too is a drag.
There are some great artists in this category and it's a shame as there are a great many good songs not given their due.
Non-English lyrics:
I also think you don't necessarily need to understand the words to a song but in the case of Brel (who was primarily known for his lyrics) again it's a shame.
The most you can hope for is to appreciate the tune, passion and singing ability.
Maybe just the vibe of the genre? Nice to have in the background....