X3 (pronounced "Triple") is Aya Matsuura's third album. It was released on January 1, 2004 and sold 110,874 copies. It contains three of her previously released singles, as well as a solo version of GET UP! Rapper that she originally sang as part of SALT5 and a remix of Yeah! Meccha Holiday. The album was certified gold by the Recording Industry Association of Japan.
- "Good Bye Natsuo" (GOOD BYE 夏男)
- "GET UP! Rapper (Matsuura Version)" (GET UP！ラッパー (松浦 Version))
- "Kanousei no Michi" (可能性の道)
- "Ne~e?" (ね～え？)
- "Original Jinsei" (オリジナル人生)
- "Koishite Gomen ne" (恋してごめんね)
- "The Last Night"
- "Watashi to Watashi to Watashi" (私と私と私)
- "Yeah! Meccha Holiday (HIGH TUNED mix)" (Yeah！めっちゃホリディ(HIGH TUNED mix))
- "Namida no Wake" (涙のわけ)
- "LOVE TRAIN"