I would suggest the music from.

* Aurora Aksnes - she is a Norwegian songwriter and singer. What I like about her music is that it's unique and feels "ethereal" when you listen to it. I can't find something similar in the music industry. She mainly writes songs about human and nature. Even there is a song about "alien". Aurora's Runaway https://www.youtube.com/watch?v=d_HlPboLRL8 is a good introduction to her music.

* Federico Martelli - he is an Italian music producer. I find his music is so relaxing to listen to. Here is the example https://www.youtube.com/watch?v=gXyxpiWJU5M. Enjoy!