Rossi's directors were most of the time yessir men , whose only purpose was to film a vehicle for their singer/actor ;André Cayatte ,in spite of the spiteful (and totally irrelevant) attacks of the NV was not one of them.His future career would bear this out.
Even under the limitation he's working under ,he manages to make a couple of interesting scenes ; the shadow on the screen , on stage , -particularly the one when the singer sings in front of an empty theater but imagining an audience -the scenes on the boat , the murder attempt .
Given the paucity of Henri Diamant-Berger's screenplay which deals with hackneyed subjects such as amnesia, love triangle,unknown (but adulated ) chanteur , revealing song,it's a wonder Cayatte had been able to make an honest work.
As the precedent user pointed out, the musical side is much better than the average Rossi flick ;Chopin's " tristesse " was, so to speak , "covered" by Serge Gainsbourg whose "inceste de citron " melody was borrowed from the classical musician .
