In what year was the album “Mona Lisa” released by MBLAQ?

In what year was the album “Mona Lisa” released by MBLAQ?: The album “Mona Lisa” was released in 2011 by MBLAQ, featuring 5 tracks.
What is the most successful song from the album “Mona Lisa” by MBLAQ?: “Mona Lisa” is the biggest hit from the album “Mona Lisa” by MBLAQ.

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