Unison (Celine Dion album) is unreleased.
The Best of Celine Dion & David Foster is a compilation album by Canadian singer Celine Dion, released by Sony Music Entertainment in selected Asian countries on 19 October 2012
 For this album, she collaborated with John Shanks and ex-Evanescence guitarist Ben Moody, as well as Kristian Lundin, Peer strm, Linda Perry, Japanese singer Yuna Ito, and R&B singer and songwriter Ne-Yo

