Sally Jane Black’s review published on Letterboxd:
I can't help but think that the plot about the song that can't be identified would, of course, end in seconds nowadays, which in turn might cut this film down to less than 2.5 hours. That would actually be quite tragic; the runtime of a Rivette film is always just right. ALWAYS.
This film seems like a spiritual successor to Celine and Julie Go Boating in that it centers on the intersecting lives of women and strange coincidences and the nature of truth. In this film, that interest in how things are and how they seem is rooted in relationships, mostly familial ones, and a more natural, human set of ideas than the fantastic mysteries of Celine and Julie.... This exploration of real human drama is punctuated by musical/dance sequences, which completely turns this film on its ear.
The most impressive of these is a balletic interpretation of a kiss, with two people moving in close harmony, almost wrapped around each other. It's physically impressive and startling to witness, as most of the musical sequences before that were in context of a performance. This moment certainly made the movie sorta click.