In what year was the album “Shh” released by After School?

In what year was the album “Shh” released by After School?: The album “Shh” was released in 2014 by After School, featuring 4 tracks.
What is the most successful song from the album “Shh” by After School?: “Shh” is the biggest hit from the album “Shh” by After School.

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