Dion and Il Divo promoted "I Believe in You" in various French television shows, performing it in late 2005.

Surprisingly, nearly 3 years after its release the song peaked at number 8 on the Portuguese Singles Chart according to Billboard magazine.

She had previously collaborated with Luciano Pavarotti on "I Hate You Then I Love You" and Andrea Bocelli on "The Prayer."

While reviewing Ancora, James Christopher Monger of AllMusic wrote: "They fawn over Celine Dion—who can barely contain her own affections..."[2] Rob Theakston who reviewed Dion's On ne change pas on AllMusic, wrote that having the new songs, including the duet, was a "plus side" to the compilation.

Il Divo performed this version in their concerts with tenor David Miller singing Dion's parts.