I resisted Lana for a while too. In fact, for a while, every time I heard "Summertime Sadness" I wanted to shoot the radio. (Played way too much) But I read that apparently that is actually a remix. It was reluctant, but after hearing the actual version of "Summertime Sadness" I listened to a few songs, and by the time I got to "Blue Jeans" it was "Crap..I think I like her." And although her voice isn't particularly great (she's more of a lyricist.) I hear the influence in phrasing and some of the sound choices. Maybe "Video Games" would be the best example.
It didn't help that I saw Lana as the..artist that interscope chose over Haley. They both released music at the same time..Lana was pushed, Haley put on the back burner. (Not really surprising given the type of female artists Interscope can sell..but I still noticed it.)
So she's ceratianly not at the top of my favorite artists list, she was someone who I saw as being influenced (like I said, mostly because of her phrasing and note choices) as opposed to someone like Ariana Grande who is a better singer (much better) but is influenced by pop, "divas" (not really a genre but I don't know what to call it) and R&B
And like I said, it's an "influence" thing. There are a lot of artists, like Gaga for example, that are influenced by jazz (although, I can clearly hear it in her voice) but it only slightly shows up in their music...I just find that, even if it's not obvious to me at first, I have a tendency to be drawn to singers who were Ella inspired.
Spencer has a really nice..smooth voice. But yea, it does seem to be the old "crooner" style.