I'm a DJ and I often use Deezer playlists to shortlist music I want to purchase. This is a very lively process which means I need easy ways of adding and removing tracks. So having to go into the respective playlist searching for the track and the deleting feels unnecessary complicated and annoying. Ideally I'd want another menu item for the song currently playing. When I click this item it should list all the playlists this song is a part of and I can choose from which one I want to delete it.
Feel free to come back with questions.