+ /**
+ * Sets the groups this artist belongs to.
+ *
+ * @param groups
+ * The groups this artist belongs to
+ * @return This artist
+ */
+ public Artist setGroups(Collection<Group> groups);
+
+ /**
+ * Returns the tracks created by this artist.
+ *
+ * @return The tracks created by this artist
+ */
+ public Collection<Track> getTracks();
+
+ /**
+ * Sets the tracks created by this artist.
+ *
+ * @param tracks
+ * The tracks created by this artist
+ * @return This artist
+ */
+ public Artist setTracks(Collection<Track> tracks);