Who provides Pocahontas’ singing voice in Disney’s "Pocahontas"?

You'd think songs that win the Oscar, Golden Globe, and Grammy turn their singers into household names, but when most people think of "Colors of the Wind," they're thinking of the pop version by Vanessa Williams (which played during the end credits). For the movie itself, Stephen Schwartz brought in Judy Kuhn for Pocahontas' parts after working with her on Broadway's "Rags." Irene Bedard handled the spoken dialogue. As for John Smith, Mel Gibson wanted all the credit and sang his own parts.