It was their first time sharing a stage — and they didn’t just sing, they soared. When Celine Dion and Il Divo performed together 13 years ago, something extraordinary happened. As the final note of the soaring climax rang out, Celine, visibly overcome, broke into tears. In a rare, emotional moment, she later confessed: “It felt like it pierced straight through my heart.” That night wasn’t just a duet — it was a collision of voices, hearts, and something sacred. No one in the room left untouched.

Back in 2005, amidst the grandeur of Les 500 Choristes and later at the Greek Theatre, Céline Dion and Il Divo united for the stunning duet “I Believe in You (Je crois en toi)”—a song that became the only official single from Dion’s compilation On ne change pas and Il Divo’s Ancora album

Their voices intertwined in a breathtaking blend of pop and operatic pop. Céline’s soaring, emotive delivery met Il Divo’s rich, classically trained harmonies, transforming the anthem into a heartfelt conversation under the spotlight .

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The performance felt more than musical—it felt spiritual. Each note hung in the air like a promise. Fans continue to share clips, describing it as “lifted to another plane” and proof of Céline’s unparalleled power even years later .

Critically, the song charted internationally—breaking into the top 40 in Canada, France, Switzerland, and the U.S. AC charts—showing it resonated well beyond just live audiences .