@Override
    public Object getValueAt(int row, int col) {
        MP3 m = songs.get(row);
        switch (Tag.values()[col]) {
            case ALBUM:
                return m.getAlbum();
            case ARTIST:
                return m.getArtist();
            case LYRICS:
                return m.getLyrics();
            case TRACK_NUMBER:
                return m.getTrack();
            case TITLE:
                return m.getTitle();
            case GENRE:
                return m.getGenre();
            case YEAR:
                return m.getReleaseDate();
            default:
                return null;
        }
    }