There are many love songs out there that are written by a songwriter, and were produced by the same producer. Dianne Warren has written songs, and the recording was produced by David Foster. The partnership went well as they created great love songs. These love songs may have elements of heartbreak, about loving someone, or even empowerment. Listening to those songs, it's easy to distinguish who created them, as there are similarities of the songs' built.
The two has written and produced one of Celine Dion's "Because You Loved Me", one of the biggest hits of 1996. If you got to hear "For You I Will" by Monica, you'll notice the similarities. I even heard the similarity on Christina Aguilera's version of "I Turn to You", though it wasn't produced by David Foster. However, it was written by Dianne Warren. It might be the touch of Warren is in the song.
Gloria Estefan singing with NSYNC for "Music Of My Heart" is never different. It is too melodic that it can be identified as Warren-Foster written and produced. "Un-break My Heart" by Toni Braxton is another product of the two songwriters and producers.
Of course, Dianne Warren had hits which she wrote, and produced by other producers yet they became hits. "How Do I Live" is one of them, also "I Don't Want to Miss A Thing" by Aerosmith. Don't forget about "There You'll Be" by Faith Hill. Apparently, Dianne Warren wrote many of her songs as soundtrack for different movies.