"Unison" is a song written by Bruce Roberts and Andy Goldmark, and first recorded by the English singer Junior in 1983 for the Tom Cruise-starred movie All the Right Moves. A minor hit, the song would attract a good deal of attention in 1990, when three female singers each covered the song and placed it on their respective albums of that year.

Céline Marie Claudette Dion is a Canadian singer. Referred to as the "Queen of Power Ballads", she is noted for her powerful and technically skilled vocals. Her music has incorporated genres such as pop, rock, R&B, gospel, and classical music. Her recordings have been mainly in English and French, although she has also sung in Spanish, Italian, German, Latin, Japanese, and Chinese.