[Android] Keep music play on standby

Hello! Is this possible to prevent Unity from stop playing music after user click standby button on Android phone?

I've already checked custom activity with a bool flag in onPause() and onDestroy() like that:

 public boolean isMusicOn = false;
     
     @Override
     protected void onPause() {
         if (!isMusicOn) super.onPause();
     }
     
     @Override
     protected void onDestroy() {
         if (!isMusicOn) super.onDestroy();
     }
     
     public void SetMusic(boolean value) {
         isMusicOn = value;
         Log.d("LullabyActivity", "SetMusic value: " + value);
     }
     
     public boolean DebugGetMusic(){
         return isMusicOn;
     }

Code compile and is properly executed, but android still force to kill application in moment I try to go to standby or home screen.

I'm using SoundManagerPro from Asset Store as my music manager in project. As far as I know Application.runInBackground doesn't work on mobiles, so is there a way to keep music play in Unity or I need to write some kind of android service to play audio in background?

I'll be grateful for any suggestions.

Best, Pawel