private List <List <SongInfo> > ScrapeIf_AlbumPage(string wikipediaPage)
        {
            List <List <SongInfo> > listOfTables = new List <List <SongInfo> >();
            var    web        = new HtmlWeb();
            var    doc        = web.Load(wikipediaPage);
            string artistName = doc.DocumentNode.SelectSingleNode("//*[@class='contributor']").InnerText;

            foreach (HtmlNode table in doc.DocumentNode.SelectNodes("//*[@class='tracklist']"))
            {
                List <SongInfo>    tableOfSongs = new List <SongInfo>();
                HtmlNode           tbody        = table.SelectSingleNode("tbody");
                HtmlNodeCollection rows         = tbody.SelectNodes("tr");          //find rows of table
                tableOfSongs = ScraperUtility.GetSongInfos_Album(rows, artistName);
                listOfTables.Add(tableOfSongs);
            }
            return(listOfTables);
        }
        private List <List <SongInfo> > ScrapeIf_SinglePage(string wikipediaPage)
        {
            List <List <SongInfo> > listOfTables = new List <List <SongInfo> >();
            List <SongInfo>         tableOfSongs = new List <SongInfo>();
            var    web        = new HtmlWeb();
            var    doc        = web.Load(wikipediaPage);
            string artistName = doc.DocumentNode.SelectSingleNode("//*[@class='infobox-header description']").SelectNodes("a").LastOrDefault().Attributes["title"].Value;

            var divWithSongs = doc.DocumentNode.SelectSingleNode("//*[@class='mw-parser-output']");
            HtmlNodeCollection listOfRows_ol = divWithSongs.SelectNodes("ol");
            List <HtmlNode>    listOfRows_li = new List <HtmlNode>();

            foreach (HtmlNode ol in listOfRows_ol)
            {
                HtmlNodeCollection rowsInsideOl = ol.SelectNodes("li");
                foreach (HtmlNode row in rowsInsideOl)
                {
                    listOfRows_li.Add(row);
                }
            }
            tableOfSongs = ScraperUtility.GetSongInfos_Single(listOfRows_li, artistName);
            listOfTables.Add(tableOfSongs);
            return(listOfTables);
        }