In what year was the album “Marionette” released by STELLAR (K-pop)?

In what year was the album “Marionette” released by STELLAR (K-pop)?: The album “Marionette” was released in 2014 by STELLAR (K-pop), featuring 3 tracks.
What is the most successful song from the album “Marionette” by STELLAR (K-pop)?: “Marionette (마리오네트)” is the biggest hit from the album “Marionette” by STELLAR (K-pop).

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