MarkerSpawner of BeatSpawner.cs script from Colin Vandervort article "FMOD Unity: Beat-Mapping"

MarkerSpawner

public class BeatSpawner : MonoBehaviour
{
    private bool beatSpawnArmed = false;

    [SerializeField]
    private Track[] tracks;

    private string lastMarkerName;

    private void Start()
    {
        if(lastMarkerName != null)
            lastMarkerName = (string)MusicManager.me.timelineInfo.lastMarker;
    }

    private void Update()
    {
        if(lastMarkerName != (string)MusicManager.me.timelineInfo.lastMarker)
        {
            beatSpawnArmed = true;
            lastMarkerName = (string)MusicManager.me.timelineInfo.lastMarker;
        }

        if (beatSpawnArmed && lastMarkerName != string.Empty)
        {
            switch (lastMarkerName[0].ToString())
            {
                case "1":
                    if (tracks[0].isActive)
                        tracks[0].CreateNote(MusicManager.me.timelineInfo.currentPosition);
                    break;
                case "2":
                    if (tracks[1].isActive)
                        tracks[1].CreateNote(MusicManager.me.timelineInfo.currentPosition);
                    break;
                case "3":
                    if (tracks[2].isActive)
                        tracks[2].CreateNote(MusicManager.me.timelineInfo.currentPosition);
                    break;
                case "4":
                    if (tracks[3].isActive)
                        tracks[3].CreateNote(MusicManager.me.timelineInfo.currentPosition);
                    break;
                default:
                    Debug.Log("No valid track");
                    break;
            }
            beatSpawnArmed = false;
        }
    }
}