This adaptation of the stage play is so dated that it almost overshadows the amazing performances. Elly Stone does not have your typical voice but she does have all the power and passion that you could ever add to an interpretation of a Brel song. Watching her sing "Sons of..." is the highpoint of the film.
The worst thing about this film is it starts out so poorly it is hard to recover. The opening renditions are very poorly shot. and there are some non-singing, non-vocal moments of "surrealism" that are too awful to be believed. But as we settle into the idea of not having a plot and not apologizing for this fact, the songs become more straight-forward performances. The heartbreaking "Song for Old Lovers" is the highpoint towards the end. It is, however, unfortunate that such a crazy song as sung by Ms. Stone, namely "Carousel", is ruined by some very petty editing "techniques" that climaxes in an image we've already seen and that wasn't effective the first time.
Some other song highlights are "Next" and "Mathilde", but it is Ms. Stone that really makes you feel the urgency of these songs. If we could just watch her and the other cast just perform these the way they did on stage, it would have been a better film. But the director decides to rely on some cinematic tricks that just look worse after time.
As for Brel's appearance, it is slightly anti-climactic, but utterly moving. His is the saddest and most recognizable of all the songs gathered here, and in its original French the most authentic. We should consider ourselves lucky for the documentation of that moment.
I would advise anyone who is willing to watch this to skip the first 8 chapters or so, and start with "Alone" sung by the Priest at the funeral. Then the film is shorter and you miss the embarrassing opening numbers...