Moody

Moody is a music track that is unlocked during the Underground Pass quest. Before the release of Stealing Creation, this used to be unlocked in level 9 Wilderness west of the Chaos Temple. It was reworked with RuneScape 3.

You don't have to do the Underground Pass to unlock this song, and you only have to do Plague City to the point where you enter West Ardougne for the first time.