Delete the app

Attention. Deleting the app does not automatically cancel your subscription. If you have a current subscription, you should cancel it first.
  1. Find Yandex.Music in the list of apps.
  2. Tap and hold the app name until the menu appears.
  3. Tap Delete.

Don't delete the app just to stop getting notifications. You can disable notifications in the settings of the web version at any time.