Can I add song to an Apple Music playlist, without adding them to 'My Music'? I like to keep my iTunes library ('My Music') clean and only add albums I really like. However, I also like to have playlists with songs I just like a bit. I do not want these songs to show up in 'My Music'.

When adding a song to a playlist in Apple Music, it's automatically added to 'My Music'. When removing it from 'My Music', it's also removed from the playlist.

Is there some way to add a song to a playlist, while not adding it to 'My Music'?
Apple has added this ability in the most recent versions of their apps:

Add a song to a playlist in Apple Music without adding it to your library

What’s New in iTunes 12.3.3