I just recently discovered this chilean singer Mon Laferte, and I'm completely in love. She is absolutely dramatic, sometimes leaning to a more latino sound, but always flawless.
https://www.youtube.com/watch?v=WT-VE9OyAJk
https://www.youtube.com/watch?v=5f0Z5Pe-FBU
And she recorded one of her songs in japanese, with a with a very decent accent and translation. Surprisingly, the whole thing works well!
https://www.youtube.com/watch?v=IP2doZrBl0Y
Highly recommended!