In what year was the album “$O$” released by Die Antwoord?

In what year was the album “$O$” released by Die Antwoord?: The album “$O$” was released in 2011 by Die Antwoord, featuring 11 tracks.
What is the most successful song from the album “$O$” by Die Antwoord?: “Enter the Ninja” is the biggest hit from the album “$O$” by Die Antwoord.
What are the main songs from the album “$O$” by Die Antwoord?: The main songs from the album “$O$” by Die Antwoord are “Enter the Ninja”, “Rich Bitch”, and “Evil Boy”.

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