In what year was the album “The Sixth Day Single Collection” released by Gackt?

In what year was the album “The Sixth Day Single Collection” released by Gackt?: The album “The Sixth Day Single Collection” was released in 2004 by Gackt, featuring 13 tracks.
What is the most successful song from the album “The Sixth Day Single Collection” by Gackt?: “Secret Garden” is the biggest hit from the album “The Sixth Day Single Collection” by Gackt.

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