public List <Artist> CreateArtistList()
{
List <Artist> artists = new List <Artist>();
List <Music> musics = musicService.GetAll();
HashSet <String> artistNames = new HashSet <String>();
foreach (Music music in musics)
{
artistNames.Add(music.Artist);
}
foreach (String artistName in artistNames)
{
List <Music> artistMusics = musicService.GetAllByArtist(artistName);
Artist artist = new Artist(artistMusics[0].Artist, artistMusics);
artists.Add(artist);
}
return(artists);
}