For anyone interested in unsung French music drama....and that's most of it....there's an interesting channel on Youtube containing extracts from operas by Camille Erlanger and others, sometimes in synthesized versions. It's only a small channel so give him some support. So far he only has 5 subscribers!
https://www.youtube.com/channel/UCYzaTqihnBl87x7YnOprNPQ/featured