Spotify songs after removing a playlist?

I’m currently importing a lot of songs from my spotify lists…

And wondering what happens when I import a spotify playlist and then remove that imported spotify playlist.

Are the songs still on my music?

How do I know which of my tracks are on in any of my playlists and which are not ?

Currently 15000 songs, so how do I find out which are not in any playlist :smiley:

Interesting prolem