"When You Believe" is a song originally composed by Stephen Schwartz, and later refurbished by writer-producer Babyface, as the theme to the film The Prince of Egypt (see The Prince of Egypt (OST)). It was the main theme of the film and was released as a single by American singers Whitney Houston and Mariah Carey as the soundtrack's first single in 1998 (see 1998 in music); it was also the first single from Houston's album My Love Is Your Love and the second from Carey's compilation album #1's.