In what year was the album “Again” released by 티아라?

In what year was the album “Again” released by 티아라?: The album “Again” was released in 2013 by 티아라, featuring 5 tracks.
What is the most successful song from the album “Again” by 티아라?: “넘버나인 No. 9” is the biggest hit from the album “Again” by 티아라.

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