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| "Journey Through the Decade" | ||||
|---|---|---|---|---|
 The cover of the standard CD release featuring Gackt in the foreground | ||||
| Single by Gackt | ||||
| Released | March 25, 2009 | |||
| Genre | Alternative rock, symphonic rock, techno | |||
| Length | 19:15 | |||
| Label | Avex Mode | |||
| Songwriter(s) | Shoko Fujibayashi (lyricist) Ryo (composer, arranger) Kōtarō Nakagawa (arranger) | |||
| Gackt singles chronology | ||||
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| Kamen Rider Series theme song singles chronology | ||||
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| Alternative cover | ||||
 The cover of the CD+DVD combo pack featuring Kamen Rider Decade in the foreground | ||||
"Journey Through the Decade" (stylized "Journey through the Decade") is a song by Japanese pop singer Gackt, serving as his thirtieth single released on March 25, 2009. It is his first song performed for Kamen Rider Decade, used as the television series' theme song.