private String whereLinkPart() {
		return "area.ID = artist.area_ID and artist.ID = artist_genre.artist_ID "
				+ "and artist_genre.genre_ID = genre.ID and artist.ID = artist_track.artist_ID "
				+ "and artist_track.track_ID = track.ID and track.recording_ID = recording.ID "
				+ "and track.medium_ID = medium.ID and medium.release_ID = release.ID";
	}