I was lucky to see him perform twice. Malicorne is still a legend in France when you're interested in folk (rock) music. My favourite album is "Trad.Arr". He now produces album with flemmish bands and with Sylvie Berger.
Although he doesn't sing traditional songs anymore (or just one during his performance). He is still regarded as THE French folk music voice.
He said he used to sing american folksongs in Paris until he met Pete Seeger who said there must be nice French traditional song too.

Sorry, my English is not what it should be.