In what year was the album “Koe” released by Keita Tachibana?

In what year was the album “Koe” released by Keita Tachibana?: The album “Koe” was released in 2006 by Keita Tachibana, featuring 10 tracks.
What is the most successful song from the album “Koe” by Keita Tachibana?: “Michishirube” is the biggest hit from the album “Koe” by Keita Tachibana.

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