def get_labels(res):
    """
    Get the record labels for the given track.

    **Parameters**

    - `res`:     list of string of album record labels, e.g.
                    ['Universal/Warner Bros.', 'None']

    **Returns**

    A dictionary of record label, `{'album_label_{num}': label_name}`.
    """
    if res != None:
        filter_none = [
            label_string
            for label_string in res
            if label_string != None
            if label_string != "None"
        ]
        joined_str = "/".join(filter_none)
        labels = [
            label.strip() for label in joined_str.split("/") if label != None
        ]
        return (
            {f"album_label_{i + 1}": label for i, label in enumerate(labels)}
            if labels != None
            else {"album_label_1": None}
        )
    return {"album_label_1": None}