Have you heard of Gackt? If not you should listen to some of the songs listed here. He was part of a Visual-Kei band called "Malice Mizer" Definitely listen to them as well if you haven't!
Anyways, Gackt's vocals are amazing! His music genre is rock and pop. If you enjoy any of these songs you should listen to them live aswell, his vocals are better. My top 2 favorite albums are Love Letter and Rebirth.
Here's a cute picture of him.
Secret Garden was the first Gackt song I ever listened to, ultimately it led to me becoming a huge fan of his music. I feel like this song is really unique compared to his other songs, the instrumental is my favorite part. I like songs like this, however I haven't found anything similar so if you know any let me know!!
3:10 is my favorite part of this song. The whole song is magical, especially the instrumental. You definitely need to watch the music video as well! I would've linked in but they changed my favorite part of the song to only Gackt's voice. it's still great nonetheless but I prefer the women's voice for some reason. Gackt's outfits in the music video are incredibly gorgeous! Please check it out!!