A monster's life is to make sound. Whatever method works for them best, they get the job done, even if not on purpose. When one hears these melodious sounds, one might get the sudden urge to sing along or dance. The Pig House's residents would gladly choose the former, in a heartbeat. An eternal dance floor which has limited escape, King Piggy somehow managed to forget of this abysmal torment and offer the pig elementals an extended stay on the island, due to the recent outbreak. This 'extended stay' perhaps gave them a lot longer than needed, as months after the virus had dissipated, when the remaining Birthders went to look for them, they themselves managed to get stuck in the infinite trance of Pig House's dance floor. Whenever personally asked if they can leave, the island's namesake quad, simply replies "Someone better be dying!
c2e.