iTunesLibrary - https://github.com/jasonsch/iTunesLibrary

Program.cs

using System;

namespace Example
{
    class Program
    {
        static void Main(string[] args)
        {
            var name = iTunesLibrary.Library.CurrentSong.Name;
            var album = iTunesLibrary.Library.CurrentSong.Album.Name;
            var artist = iTunesLibrary.Library.CurrentSong.Artist.Name;
            var track = iTunesLibrary.Library.CurrentSong.TrackNum;
            var disc = iTunesLibrary.Library.CurrentSong.Disc;

            var normalizedText = $"{disc}-{track}. {name} / {album} - {artist}";
            Console.WriteLine(normalizedText);
        }
    }
}

Song.cs.add.cs

public int TrackNum
{
    get
    {
        return Track.TrackNumber;
    }
}

public int Disc
{
    get
    {
        return Track.DiscNumber;
    }
}