Turret Opera

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Turret Opera

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Perché non passi lontana? Sì, lontana da Scienza!
Prima Donna Turret

The Turret Opera is an event in the single-player campaign of Portal 2 in which a group of Sentry Turrets form a unique melody via the movement sounds of their weaponry casings.

The opera is introduced as an easter egg in Test Chamber 16 of GLaDOS' testing tracks in Chapter 3: The Return, hidden beside a wall with a gap near the start of the chamber, where a Turret can be seen inside it. Upon entering, Chell would be able to witness various Turrets beneath the room as they serenade to the Prima Donna Turret.

The Turret Opera is seen again for the last time, as a closure to the game's single-player campaign, based on the popular opera phrase "it's not over until the fat lady sings" - in which the Prima Donna Turret finally sings in the game along with the other Turrets.

The opera sequence begins after GLaDOS sends Chell on a lift towards the surface. The lift stops in front of some Turrets aimed at Chell, making it seem like GLaDOS's promise of freedom was a lie. Instead, the Turrets begin serenading her. As the lift ascends even further, Chell witnesses an even larger group of Turrets awaiting her arrival as the Prima Donna Turret sings the lead vocals and the Animal King Turret provides the bass notes. The opera is still audible as the lift arrives at the top, lingering until the moment Chell finally steps outside.

Cara Mia Addio! by Aperture Science Psychoacoustics Laboratory [2:33] | Download Download | Play icon.png Play




  • Central AI Chamber
  • Surface

Finale Opera Lyrics

[Verse 1]
Cara bella, cara mia bella! (Beautiful dear, my darling beauty!)
Mia bambina, oh ciel! (My little girl, oh heaven!)
Che la stima! Che la stima! (How I adore you! How I adore you!)
Oh cara mia, addio! (Oh my dear, farewell!)

[Verse 2]
La mia bambina cara, (My dear little girl,)
Perché non passi lontana? (Why not go a long way away?)
Sì, lontana da Scienza! (Yes, far from Science!)
Cara, cara mia bambina, (Dear, my beloved little girl,)
Ah, mia bella! (Ah, my beautiful one!)

[Verse 3]
Ah, mia cara! Ah, mia cara! (Ah, my dear! Ah, my dear!)
Ah, mia bambina! (Ah, my little girl!)
Oh cara, cara mia! (Oh dear, my dear!)

[Instrumental Break]

[Repeat Verse 3]
Mia cara! Ah, mia cara! (My dear! Ah, my dear!)
Ah, mia bambina! (Ah, my little girl!)
Oh cara, cara mia! (Oh dear, my dear!)


The song itself was produced by Valve composer Mike Morasky and vocalized by the voice of GLaDOS and the turrets, Ellen McLain; and the librettist is suggested to be Ellen as well. It was added to the Portal 2: Songs to Test By and the Portal 2: Songs to Test By (Collector's Edition) albums, the latter of which is available on Spotify and is accredited to Aperture Science Psychoacoustic Laboratories. The albums both act as the official soundtrack for Portal 2, with the Collector's Edition adding in songs from the series' first installation and even an audible mini-comic, among others.[1] It was revealed by McLain that she "made up the words out of [her] bad Italian [...] on the spot."[2]


  • The lyrics can otherwise be read here in both its original and translated form on the popular lyric-recording and speculation site, Genius.
  • In the finale opera sequences, the Companion Cube from Portal can be seen flowing upwards through the tubes in the background as the lift rises. Some people have mistaken this for Doug Rattmann running around. Moving, in fact, is a Frankenturret.
  • The word "Ciel" in the lyrics is speculated to be a play on words; it is pronounced almost the same as Chell. Despite the song being an Italian aria, "Ciel" itself can be translated from French to mean 'sky,' but in some specific and appropriate cases, 'heaven.'
  • A single Frankenturret can be seen waddling behind the group of Turrets on the left side of the finale opera room.
  • Before becoming a voice actress, Ellen McLain was an opera singer.
  • In Portal 2, Weighted Companion Cubes can be heard humming it when nearby.

Sheet Music

Sebastian Wolff has transcribed the song and provided free sheet music: