Here's an as short as possible version of a previous post in this thread, explaining the behavior of the Release Radar.
- I receive tracks from artists I don't follow at all in my Release Radar - This is intended and we don't plan on changing this. The Release Radar doesn't only help you keep track of artists you follow, but is meant to allow you to discover new music from others we think you might enjoy. It is also one way for Spotify to help artists get their music noticed.
- I get music that I don't enjoy at all in my Release Radar - This means our algorithm doesn't know your music taste so well. There can be many reasons behind this, but the rule of thumb to improve the music you receive in the automatically generated playlists for you is to listen to music without a private session, use the like and hide features, have more intentional music listening habits rather than opportunity based and when you discover something new that you enjoy, listen to it proportionally more than other content. Following these guidelines should give you better recommendations in time. It will still not be perfect and it can vary from person to person, but we're constantly improving these as we go.
- I get tracks from artists that are named exactly the same as ones I follow and enjoy, but it turns out the track is unrelated to that artist and they only have the same name. - This happens if a track initially gets erroneously uploaded to the artist you follow. It can be that the error is already corrected by the time your Release Radar updates, but it already captured the track on its upload. It can happen with featured artists as well. Currently, there's no technical solution in place than can prevent errors like this happening, as we rely on submitted metadata. If you spot an incorrect content, it's best to report it as described here. Make sure your report is clear. If you can't find an artist profile with the same name as the one you follow, it probably hasn't been created yet and is part of the reason the error occurred. Point that out in your report to ensure it can be processed efficiently.