Portal 2 Opera 1

22 s

Portal - Turret

15 s

A chambear opera

11 s

The Dark Tower

11 s

Phantom

16 s

Portal Turret

16 s

Turret Prometheus

9 s

Different Turret

18 s

Turret Anthem

26 s

Opera

11 s

Cell Opera

14 s

Mandolin

13 s

Opera Angel

21 s

Cool Sound

20 s

Opera 2009

27 s