public class MusicController
    {
        private FMOD.Studio.EventInstance _eventInstance;

        public MusicController()
        {
            if (PlayerPrefs.HasKey("music_enabled"))
                return;

            Utils.Prefs.SetBool("music_enabled", true);
        }

        public void PlayMusic(string musicKey)
        {
            StopMusic();
            if (!Utils.Prefs.GetBool("music_enabled"))
                return;

            _eventInstance = RuntimeManager.CreateInstance(musicKey);
            _eventInstance.start();
        }

        public void StopMusic()
        {
            if (!_eventInstance.Equals(default(FMOD.Studio.EventInstance)))
            {
                _eventInstance.stop(STOP_MODE.ALLOWFADEOUT);
                _eventInstance.release();
            }
        }
    }

// ------------------------------
        public void Init(Transform parent)
        {
            var window = _uiService.Show<UISettingsWindow>();
            window.MusicToggle.Switch(Utils.Prefs.GetBool("music_enabled"));
            window.MusicToggle.OnValueChanged.AddListener(on =>
            {
                Utils.Prefs.SetBool("music_enabled", on);
                if (on)
                    _musicController.PlayMusic("event:/Music/MainMusic");
                else
                    _musicController.StopMusic();
            });

            window.SoundToggle.Switch(Utils.Prefs.GetBool("sound_enabled"));
            window.SoundToggle.OnValueChanged.AddListener(on => Utils.Prefs.SetBool("sound_enabled", on));

            window.CloseClickCommand.Subscribe(_ => Dispose()).AddTo(CompositeDisposable);
        }