static void Main(string[] args)
{
Song song1 = new Song("Song1", 2, "Artist1");
Song song2 = new Song("Song2", 2, "Artist2");
Artist artist3 = new Artist("Artist3");
Composition composition = new Composition("Composition1", 2, artist3, "artist4");
song1.AddArtist("Artist5");
song2.AddArtist("Artist6");
composition.AddArtist("Artist7");
ITrack[] tracks = new ITrack[3];
tracks[0] = song1;
tracks[1] = song2;
tracks[2] = composition;
foreach (ITrack itrack in tracks)
{
if (itrack != null && itrack.GetArtists() != null)
{
foreach (Artist artist in itrack.GetArtists())
{
Console.WriteLine(artist.Name);
}
}
}
Console.ReadLine();
}