Featuring X

 is a mini-album by Ikeda Aya. It contains all of the songs from her previous two singles, as well as 2 new tracks, and a second disk with karaoke versions.

Disc 1

 * 1) TO JOIN FORCES featuring Kitadani Hiroshi
 * 2) My Best Partner featuring Kudou Mayu
 * 3) WE CAN ∞ featuring Ise Daiki
 * 4) Lovin' you featuring Gojo Mayumi
 * 5) GO WAY! featuring PSYCHIC LOVER
 * 6) Soba ni Irukara (そばにいるから) featuring Yoshida Hitomi

Disc 2

 * 1) featuring YOU (Songs Karaoke2Version Recording)