― Today I truly needed to hear this beautiful song by Whitney Houston and Mariah Carey. ∙ A song that lifts my spirits whenever I'm feeling low. ∙ It's such an inspirational song. ∙ When you believe ∙ Was written and composed by Stephen Schwartz for the 1998 DreamWorks animated feature The Prince of Egypt. ∙ Youtube - When you believe ∙ Here are some other "when" songs ∙ When I need you ∙ Written by Albert Hammond and Carole Bayer Sager was a [...].