The Opera Ages

The Opera Ages is the third world in Plants VS. Zombies 3: Battles Through History. After completion of Ancient Pompeii, the player receives the Musical Key that unlocks a portal that brings them to this world. The Opera Ages has 30 levels, and there are five new plants: Screaming Lettuce, (Winter-mint) Tropical Keys, (Arma-mint) Saxomango, (Spear-mint) Blowberry, (Fila-mint) and Bandarin (Ail-mint).

Gimmicks
The main gimmick in The Opera Ages is that some zombies now have instruments.

In level one, Trumpet Zombies are introduced. Trumpet Zombies blow through their trumpets and blow back any plants in the row they are in. Kill them before they get too close or else they'll blow your plants away.

In level five, the infamous Piano Zombies make their comeback. Piano Zombies act the exact same way as the do in PVZ2.

In level fifteen, the Saxophone Zombie is introduced. Saxophone Zombies play music that causes zombies to go one speed faster and their saxophones provide extra protection, making them Machined.

In level twenty-five, Clarinet Zombies are introduced. Clarinet Zombies play 'beautiful' tunes that cause any Singing Conehead Zombies to become Ballet Dancer Zombies.