the paper proposes a normalizing-flow based generative model called Blow for non-parallel raw-audio voice conversion that makes use of speaker identity labels. The model makes use of a single-scale structure, conditioning module based on hypernetworks, shared speaker embeddings. Reviewers have recognized the novelty of the paper that consider normalizing flows for voice conversion. They also liked the extensive experiments as well as the ablation studies, and the provided samples of the voice conversions.