This link should tell you more about how we get the music that we stream.
"Spotify likely has a deal with your label or distributor. Contact them to ask them to send us your music. Note that if you have only recently licensed your music for delivery to Spotify, it may take between 4 and 6 weeks for it to appear on the service.
If your music is on Spotify, even though you haven't sent it to us, it's likely because your label or distributor has sent it to us. Contact them to rectify this issue.
We also get all metadata (artist/track/album name, etc.) from labels and distributors, and we can't update it manually. If you see that something's wrong, contact your distributor!"
I do not have access to that information. Could you please send a request to Support? They will be able to pass the case onto the team that deals with the Labels. If you could include information about the songs and artist, that would help resolve your question a lot quicker.