In what year was the album “Dark Angel” released by 이효리?

In what year was the album “Dark Angel” released by 이효리?: The album “Dark Angel” was released in 2006 by 이효리, featuring 13 tracks.
What is the most successful song from the album “Dark Angel” by 이효리?: “E.M.M.M” is the biggest hit from the album “Dark Angel” by 이효리.

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