Ethereal music

Ethereal music is a broad term to describe ambient-instrumental music without sharp tones: specifically the music has to have a dreamlike quality without sharp changes in tone or volume, usually following/developing the same melody over time(repeats and hooks are not emphasized). Ethereal music is instrumental, but variants with subtle voices(usually female vocals) exist in genres like Ethereal Wave. Orchestral music is rarely Ethereal due sharp transitions between different instruments. https://www.last.fm/tag/ethereal