Delete Google Play Music Recommendation History to Reset Suggestions
Music services often make recommendations based on your history (and many other sites ), and this often means you get unwanted recommendations if you relinquish control to someone else. It is very easy to clear this history in Google Plus Music.
All you have to do is go to the settings page , scroll to the bottom and click the “Delete” button under “Delete recommendation history”. This should delete all history Google uses to recommend radio stations and other feeds to you.
Delete recommendation history on Google Play Music | Google operating system