I have actually seen this movie (it was a long time ago, but I remember it, if vaguely)! I'm pretty sure I enjoyed it.

I wouldn't rank it among the best unknown film noir I've seen, but it was a very nice thing to sack out on the couch and stare at. I did stay up for about an hour of Humoresque, which was fascinating—I kind of liveblogged it to derspatchel—but then my brain abruptly cut out and I went to bed before the minor visual hallucinations got any worse. Fortunately, it has Joan Crawford, so it's on DVD.