Delete a Yandex.Music account
You can only delete your account if you registered it as a Yandex account or linked it to a social network profile. You can't delete an account that was registered based on a phone number.
If you have a Yandex account that you use to log into other services, then you will lose data saved on all the personal services connected to that account (Mail, Disk, etc.) if you delete it. Learn more in the Deleting your account section of Help for Yandex.Passport.
You will permanently lose your music library if you delete your account.
Don't delete your account just to cancel a recurring subscription or stop receiving notifications. You can disable Yandex.Music notifications in the settings of the web version and cancel your subscription at any time. If you delete your account and forget to cancel a subscription that you placed using the web version of the service, please contact customer support.