Please support labels on music in Amazon Music. Currently Amazon Music does not offer functionality to manage music in good way. Playlists are not option because is is just a flat list. No hierarchical structure is possible. On many playlists you loose the overview quickly.
Usecase: Add labels "80th" and "party" on a track. In this way I can fetch all "party" tracks or just party tracks from the 80th. It is very flexibel and you don't have to manage hundrets of playlists to gain the same filter possibilities.